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Engine Control System & Fuel System - 5.3l, 6.0l, 6.2l - Repair Instructions Cadillac Escalade GMT900

Testing & Diagnostics 6 illustrations ~26526 words

Engine Control Module Replacement

CAUTIONTurn the ignition OFF when installing or removing the control module connectors and disconnecting or reconnecting the power to the control module (battery cable, powertrain control module (PCM)/engine control module (ECM)/transaxle control module (TCM) pigtail, control module fuse, jumper cables, etc.) in order to prevent internal control module damage. Control module damage may result when the metal case contacts battery voltage. DO NOT contact the control module metal case with battery voltage when servicing a control module, using battery booster cables, or when charging the vehicle battery. In order to prevent any possible electrostatic discharge damage to the control module, do no touch the connector pins or the soldered components on the circuit board. Remove any debris from around the control module connector surfaces before servicing the control module. Inspect the control module connector gaskets when diagnosing or replacing the control module. Ensure that the gaskets are installed correctly. The gaskets prevent contaminant intrusion into the control module. The replacement control module must be programmed.

Note. Record the current Engine Oil Life percentage, and use a scan tool to update the NEW ECM, if replacing.

Removal Procedure

  1. Record the current Engine Oil Life percentage, and use a scan tool to update the NEW ECM, if replacing.
  2. Disconnect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  3. Disengage the engine wiring harness upper electrical connector retainer (2) and remove the connector (1) from the ECM.
  4. Disengage the engine wiring harness lower electrical connector retainer (3) and remove the connector (4) from the ECM.
  5. Disengage the retainer tabs securing the ECM to the bracket.
  6. Remove the ECM.

Installation Procedure

  1. Install the bottom ECM tabs into the bracket.
  2. Push the ECM in securing the ECM to the bracket.
  3. Position the engine wiring harness lower electrical connector and engage the retainer (3) securing the lower connector (4) to the ECM.
  4. Position the engine wiring harness upper electrical connector and engage the retainer (2) securing the upper connector (1) to the ECM.
  5. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  6. If a NEW ECM was installed, program the ECM. Refer to «Control Module References»(/cadillac/escalade/gmt900-2006-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) .

Crankshaft Position System Variation Learn

Note. The Crankshaft Position System Variation Learn procedure is also required when the following service procedures have been performed, regardless of whether DTC P0315 is set: An engine replacement A engine control module (ECM) replacement A crankshaft balancer replacement A crankshaft replacement A crankshaft position sensor replacement Any engine repairs which disturb the crankshaft to crankshaft position sensor relationship.

Note. The ECM monitors certain component signals to determine if all the conditions are met to continue with the crankshaft position System Variation Learn Procedure.

  1. Monitor the engine control module (ECM) for DTCs with a scan tool. If other DTCs are set, except DTC P0315, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) for the applicable DTC that set.
  2. Select the crankshaft position (CKP) variation learn procedure with a scan tool.
  3. The scan tool instructs you to perform the following: IMPORTANT: Close the hood. IMPORTANT: The engine must be at operating temperature. Block drive wheels. Set parking brake. Apply and hold brake pedal. IMPORTANT: The vehicle must remain in PARK. Start the engine.
  4. Enable the CKP System Variation Learn Procedure with a scan tool.
  5. Quickly apply and release the accelerator pedal.
  6. Test in progress.
  7. The scan tool displays Learn Status: Learned this ignition.
  8. Once the Learn Procedure has successfully completed, and in order to store the crankshaft position system variation values in the ECM, turn OFF the ignition and verify all vehicle systems are OFF. This may take up to 2 minutes.

Description

The engine control module (ECM) learns the airflow through the throttle body to ensure the correct idle. The learned airflow values are stored within the ECM. These values are learned to adjust for production variation and will continuously learn during the life of the vehicle to compensate for reduced airflow due to throttle body coking. Anytime the throttle body airflow rate changes, for example due to cleaning or replacing, the values must be relearned.

An engine that had a heavily coked throttle body that has been cleaned or replaced may take several drive cycles to learn out the coking. To accelerate the process, the scan tool has the ability to reset all learned values back to zero. A new ECM will also have values set to zero.

The idle may be unstable or a DTC may set if the learned values do not match the actual airflow.

Conditions for Running the Throttle Learn Procedure

Reset Procedure

  1. DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0122, P0123, P0128, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0220, P0222, P0223, P0300, P0351, P0352, P0353, P0496, P0601, P0604, P0606, P060D, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138, or P2176 are not set.
  2. Ignition ON, engine OFF.
  3. The vehicle speed sensor (VSS) is 0 km/h (0 mph).

Learn Procedure

  1. DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0122, P0123, P0128, P0171, P0172, P0174, P0175, P0201, P0202, P0203, P0204, P0205, P0206, P0220, P0222, P0223, P0300, P0351, P0352, P0353, P0496, P0601, P0604, P0606, P060D, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138, or P2176 are not set.
  2. The engine speed is between 450-4,000 RPM.
  3. The manifold absolute pressure (MAP) is greater than 5 kPa.
  4. The mass air flow (MAF) is greater than 2 g/s.
  5. The ignition voltage is greater than 10 volts.

Throttle Learn

Reset Procedure (Performed after the throttle body is cleaned or replaced)

  1. Ignition ON, engine OFF, perform the Idle Learn Reset in Module Setup with a scan tool.
  2. Start the engine and monitor the TB Idle Airflow Compensation parameter. The TB Idle Airflow Compensation value should equal 0 percent and the engine should be idling at a normal idle speed.
  3. Clear the DTCs and return to the diagnostic that referred you here.

Learn Procedure (Performed after the ECM is flashed or replaced)

  1. Start and idle the engine for 3 minutes.
  2. With a scan tool, monitor the Desired Idle Speed and the actual Engine Speed.
  3. The ECM will start to learn the new idle cells and Desired Idle Speed should start to decrease.
  4. Ignition OFF for 60 seconds.
  5. Start and idle the engine for 3 minutes.
  6. After the 3 minute run time the engine should be idling normal. NOTE: During the drive cycle the check engine light may come on with idle speed DTCs. If idle speed codes are set, clear codes so the ECM can continue to learn. If the engine idle speed has not been learned the vehicle will need to be driven at speeds above 70 km/h (44 mph) with several decelerations and extended idles.
  7. After the drive cycle, the engine should be idling normally. If the engine idle speed has not been learned, turn OFF the ignition for 60 seconds and repeat step 6.
  8. Once the engine speed has returned to normal, clear DTCs and return to the diagnostic that referred you here.
CAUTIONUse care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
  1. Drain the cooling system to a level below the engine cooling temperature (ECT) sensor. Refer to «Cooling System Draining and Filling (Static Fill)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system__cooling-system-draining-and-filling-static) .
  2. Disconnect the engine wiring harness electrical connector (2) from the ECT sensor.
  3. Remove the ECT sensor.
CAUTIONDo not insert any tools into the throttle body bore in order to avoid damage to the throttle valve plate.
CAUTIONUse care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
  1. If installing the old sensor, coat the threads with sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent.
  2. Install the ECT sensor and tighten to 20 N.m (15 lb ft).
  3. Connect the engine wiring harness electrical connector (2) to the ECT sensor.
  4. Refill the cooling. Refer to «Cooling System Draining and Filling (Static Fill)»(/cadillac/escalade/gmt900-2006-2014/remont/cooling-system-mechanical/#engine-cooling-system__cooling-system-draining-and-filling-static) .

Scheme 1

Scheme 1: Mass Airflow Sensor with Intake Air Temperature Sensor Replacement
Scheme 1: Mass Airflow Sensor with Intake Air Temperature Sensor Replacement
CalloutComponent Name
1Mass Airflow Sensor Screw (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 1.5 N.m(13 lb in)
2Mass Airflow Sensor/Intake Air Temperature Sensor Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .
  1. Remove the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
  2. Disconnect the engine wiring harness electrical connector (4) from the manifold absolute pressure (MAP) sensor.
  3. Remove the MAP sensor retainer.
  4. Remove the MAP sensor.
IMPORTANTLightly coat the MAP sensor seal with clean engine oil before installing the sensor.
  1. Install the MAP sensor.
  2. Install the MAP sensor retainer.
  3. Connect the engine harness wiring electrical connector (4) to the MAP sensor.
  4. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
CAUTIONRefer to Fastener Caution .
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  2. Unbolt the front propeller shaft from the front differential, if equipped with four wheel drive (4WD). Refer to «Front Propeller Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/driveshaft-universal-joints/#propeller-shaft-and-universal-joints) .
  3. For vehicles equipped with a 4L60-E/4L70-E automatic transmission perform the following steps, for vehicles equipped with a 6L80-E automatic transmission proceed to step 7.
  4. Remove the connector position assurance (CPA) retainer.
  5. Disconnect the engine wiring harness electrical connector (2) from the HO2S.
  6. Remove the HO2S electrical connector clip (1) from the fuel line clip.
  7. Remove the CPA retainer (2).
  8. Remove the engine wiring harness electrical connector clip (1) from the fuel line clip.
  9. Disconnect the engine wiring harness electrical connector (3) from the HO2S.
  10. Remove the HO2S (1 or 2).

Note. A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.

  1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
  2. Install the HO2S (1 or 2) and tighten to 42 N.m (31 lb ft).
  3. For vehicles equipped with a 4L60-E/4L70-E automatic transmission perform the following steps, for vehicles equipped with a 6L80-E automatic transmission proceed to step 7.
  4. Install the HO2S electrical connector clip (1) to the fuel line clip.
  5. Connect the engine wiring harness electrical connector (2) to the HO2S.
  6. Install the CPA retainer.
  7. Connect the engine wiring harness electrical connector (3) to the HO2S.
  8. Install the engine wiring harness electrical connector clip (1) to the fuel line clip.
  9. Install the CPA retainer (2).
  10. Install the front propeller shaft to the front differential, if equipped with 4WD. Refer to «Front Propeller Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/driveshaft-universal-joints/#propeller-shaft-and-universal-joints) .
  11. Lower the vehicle.
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  2. Unbolt the front propeller shaft from the front differential, if equipped with four wheel drive (4WD). Refer to «Front Propeller Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/driveshaft-universal-joints/#propeller-shaft-and-universal-joints) .
  3. Remove the connector position assurance (CPA) retainer (2).
  4. Disconnect the HO2S electrical connector from the engine wiring harness electrical connector (3).
  5. Remove the HO2S (1).

Note. A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.

  1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
  2. Install the HO2S (1) and tighten to 42 N.m (31 lb ft).
  3. Connect the HO2S electrical connector to the engine wiring harness electrical connector (3).
  4. Install the CPA retainer (2).
  5. Install the front propeller shaft to the front differential, if equipped with 4WD. Refer to «Front Propeller Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/driveshaft-universal-joints/#propeller-shaft-and-universal-joints) .
  6. Lower the vehicle.
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  2. Remove the connector position assurance (CPA) retainer (1).
  3. Disconnect the HO2S electrical connector from the engine wiring harness electrical connector (3).
  4. Remove the HO2S (5).

Note. A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.

  1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
  2. Install the HO2S (5) and tighten to 42 N.m (31 lb ft).
  3. Connect the HO2S electrical connector to the engine wiring harness electrical connector (3).
  4. Install the CPA retainer (1).
  5. Lower the vehicle.
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  2. Remove the connector position assurance (CPA) retainer (1).
  3. Disconnect the HO2S electrical connector from the engine wiring harness electrical connector (3).
  4. Remove the HO2S (4).

Note. A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.

  1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
  2. Install the HO2S (4) and tighten to 42 N.m (31 lb ft).
  3. Connect the HO2S electrical connector to the engine wiring harness electrical connector (3).
  4. Install the CPA retainer (1).
  5. Lower the vehicle.
  1. Remove the right wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  2. Remove the connector position assurance (CPA) retainer (2).
  3. Disconnect the HO2S electrical connector (7) from the engine wiring harness electrical connector (1).
  4. Remove the HO2S clip (8) from the engine wiring harness.
  5. Remove the HO2S (3).

Note. A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.

  1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
  2. Install the HO2S (3) and tighten to 42 N.m (31 lb ft).
  3. Connect the HO2S electrical connector (7) to the engine wiring harness electrical connector (1).
  4. Install the CPA retainer (2).
  5. Install the HO2S clip (8) to the engine wiring harness.
  6. Install the right wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  1. Remove the right wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  2. Remove the connector position assurance (CPA) retainer (5).
  3. Disconnect the HO2S electrical connector from the engine wiring harness electrical connector (1).
  4. Remove the HO2S (2).

Note. A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.

  1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
  2. Install the HO2S (2) and tighten to 42 N.m (31 lb ft).
  3. Connect the HO2S electrical connector to the engine wiring harness electrical connector (1).
  4. Install the CPA retainer (5).
  5. Install the right wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement - Right Side»(/cadillac/escalade/gmt900-2006-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  2. Remove the connector position assurance (CPA) retainer (4).
  3. Disconnect the engine wiring harness electrical connector (4) from the HO2S electrical connector (3).
  4. Remove the HO2S electrical connector clip from the engine harness clip (6).
  5. Remove the HO2S (4).

Note. A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.

  1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
  2. Install the HO2S (4) and tighten to 42 N.m (31 lb ft).
  3. Install the HO2S electrical connector clip to the engine harness clip (6).
  4. Connect the engine wiring harness electrical connector (4) to the HO2S electrical connector (3).
  5. Install the CPA retainer (5).
  6. Lower the vehicle.
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  2. Remove the connector position assurance (CPA) retainer (3).
  3. Disconnect the engine wiring harness electrical connector (2) from the HO2S electrical connector.
  4. Remove the HO2S electrical connector clip from the engine harness clip (4).
  5. Remove the HO2S (3).

Note. A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before the reinstallation.

  1. If reinstalling the old sensor, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
  2. Install the HO2S (3) and tighten to 42 N.m (31 lb ft).
  3. Install the HO2S electrical connector clip to the engine harness clip (4).
  4. Connect the engine wiring harness electrical connector (2) to the HO2S electrical connector.
  5. Install the CPA retainer (3).
  6. Lower the vehicle.
CAUTIONHandle the electronic throttle control components carefully. Use cleanliness in order to prevent damage. Do not drop the electronic throttle control components. Do not roughly handle the electronic throttle control components. Do not immerse the electronic throttle control components in cleaning solvents of any type.
  1. Push down the small tab and disconnect the accelerator pedal position (APP) sensor electrical connector (1).
  2. Remove the accelerator pedal bolts.
  3. Remove the accelerator pedal.
  1. Position the accelerator pedal to the accelerator pedal bracket.
  2. Install the accelerator pedal bolts and tighten to 9 N.m (80 lb in).
  3. Connect the APP sensor electrical connector (1).
  4. Connect a scan tool to the diagnostic port in order to test for proper throttle-opening and throttle-closing range.
  5. Operate the accelerator pedal and monitor the throttle angles. The accelerator pedal should operate freely, without binding, between a closed throttle, and a wide open throttle (WOT).
  6. Verify that the vehicle meets the following conditions: The vehicle is not in a reduced engine power mode. The ignition is ON. The engine is OFF.
CAUTIONHandle the electronic throttle control components carefully. Use cleanliness in order to prevent damage. Do not drop the electronic throttle control components. Do not roughly handle the electronic throttle control components. Do not immerse the electronic throttle control components in cleaning solvents of any type.
CAUTIONDO NOT for any reason, insert a screwdriver or other small hand tools into the throttle body to hold open the throttle plate, as the wedge inside the throttle body could be damaged.
  1. Remove the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Disconnect the engine wiring harness electrical connector (3) from the electronic throttle control.
  3. Remove the throttle body nuts (507) and bolts (538).
  4. Remove the throttle body (508).
  5. Remove and discard the throttle body gasket (509).
  1. Install a NEW throttle body gasket to the intake manifold. Align the tab of the gasket with the notch in the manifold.
  2. Install the throttle body (508), bolts (538), and nuts (507) and tighten to 10 N.m (89 lb in).
  3. Connect the engine wiring harness electrical connector (3) to the electronic throttle control.
  4. Install the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Connect a scan tool in order to test for proper throttle-opening and throttle-closing range.
  6. Operate the accelerator pedal and monitor the throttle angles. The accelerator pedal should operate freely, without binding, between a closed throttle, and a wide open throttle (WOT).
  7. Verify that the vehicle meets the following conditions: The vehicle is not in a reduced engine power mode. The ignition is ON. The engine is OFF.
  8. Perform the Throttle Learn Procedure. Refer to «Throttle/Idle Learn»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  9. Inspect for coolant leaks.

Throttle Body Cleaning

  1. Remove the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) . WARNING: Turn OFF the ignition before inserting fingers into the throttle bore. Unexpected movement of the throttle blade could cause personal injury. CAUTION: Do not insert any tools into the throttle body bore in order to avoid damage to the throttle valve plate.
  2. Inspect the throttle body bore and the throttle plate for deposits. You will need to open the throttle plate in order to inspect all surfaces. CAUTION: Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This solvent may damage fuel system components.
  3. Clean the throttle body bore and the throttle plate using a clean shop towel with GM Top Engine Cleaner, P/N 1052626, or AC-Delco Carburetor Tune-Up Conditioner, P/N X66-P, or an equivalent product.
  4. Install the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Perform the Throttle Learn Procedure. Refer to «Throttle/Idle Learn»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .

Special Tools

CH-48027 Digital Pressure Gauge. See Special Tools .

WARNINGRemove the fuel tank cap and relieve the fuel system pressure before servicing the fuel system in order to reduce the risk of personal injury. After you relieve the fuel system pressure, a small amount of fuel may be released when servicing the fuel lines, the fuel injection pump, or the connections. In order to reduce the risk of personal injury, cover the fuel system components with a shop towel before disconnection. This will catch any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.
  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Connect the CH-48027-1 (1) to the CH-48027-2 (2).
  3. Remove the shop towel from around the fuel rail service port, and place in an approved gasoline container.
  4. Perform any tests and/or diagnostics as needed. For the proper usage of the CH-48027 , refer to the manufacture's directions. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  1. Relieve the fuel system pressure, if required. Perform the following steps: WARNING: Wrap a shop towel around the fuel pressure connection in order to reduce the risk of fire and personal injury. The towel will absorb any fuel leakage that occurs during the connection of the fuel pressure gauge. Place the towel in an approved container when the connection of the fuel pressure gauge is complete. Wrap a shop towel around the fuel rail service port. Place the hose on the CH-48027-2 (2) into an approved gasoline container. Open the valve on the CH-48027-2 (2) in order to bleed any fuel from the fuel rail. Close the valve on the CH-48027-2 (2). Remove the hose on the CH-48027-2 (2) from the approved gasoline container. Remove the shop towel from around the fuel rail service port, and place in an approved gasoline container.
  2. Disconnect the CH-48027-1 (1) from the CH-48027-2 (2).
  3. Disconnect the CH-48027-2 (2) from the CH-48027-3 (4).
  4. Disconnect the CH-48027-3 (4) from the fuel rail service port.
  5. Install the fuel rail service port cap.
  6. Tighten the fuel fill cap.

CH-48027: Digital Pressure Gauge

  1. If the fuel system requires repair, prevent fuel spillage by removing the fuel pump fuse. Refer to «Electrical Center Identification Views»(/cadillac/escalade/gmt900-2006-2014/remont/electrical-component-locations/#wiring-systems-and-power-management-component-locator-electrical-center-identification-views) .
  2. Remove the engine cover, if required.
  3. Loosen the fuel fill cap in order to relieve the fuel tank vapor pressure.
  4. Remove the fuel rail service port cap.
  5. Wrap a shop towel around the fuel rail service port.
  6. Connect the CH-48027-3 (4) to the fuel rail service port.
  7. Connect the CH-48027-2 (2) to the CH-48027-3 (4).
  8. Place the hose on the CH-48027-2 (2) into an approved gasoline container.
  9. Open the valve on the CH-48027-2 (2) in order to bleed any fuel from the fuel rail.
  10. Close the valve on the CH-48027-2 (2).
  11. Remove the hose on the CH-48027-2 (2) from the approved gasoline container.
  12. Disconnect the CH-48027-2 (2) from the CH-48027-3 (4).
  13. Disconnect the CH-48027-3 (4) from the fuel rail service port.
  14. Remove the shop towel from around the fuel rail service port, and place in an approved gasoline container.
  15. Install the fuel rail service port cap.
  16. Install the engine cover, if required.
  17. Tighten the fuel fill cap.

Fuel Pressure Relief (Without CH-48027)

WARNINGRemove the fuel tank cap and relieve the fuel system pressure before servicing the fuel system in order to reduce the risk of personal injury. After you relieve the fuel system pressure, a small amount of fuel may be released when servicing the fuel lines, the fuel injection pump, or the connections. In order to reduce the risk of personal injury, cover the fuel system components with a shop towel before disconnection. This will catch any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.
  1. If the fuel system requires repair, prevent fuel spillage by removing the fuel pump fuse. Refer to «Electrical Center Identification Views»(/cadillac/escalade/gmt900-2006-2014/remont/electrical-component-locations/#wiring-systems-and-power-management-component-locator-electrical-center-identification-views) .
  2. Loosen the fuel fill cap in order to relieve the fuel tank vapor pressure.
  3. Remove the engine cover, if required.
  4. Remove the fuel rail service port cap.
  5. Wrap a shop towel around the fuel rail service port and using a small flat-bladed tool, depress (open) the fuel rail test port valve.
  6. Remove the shop towel from around the fuel rail service port, and place in an approved gasoline container.
  7. Install the fuel rail service port cap.
  8. Install the engine cover, if required.
  9. Tighten the fuel fill cap.

J 41769 Fuel Line Quick Disconnect Tool. See Special Tools .

Disconnect Procedure

  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Remove the fuel line retainer.
  3. Using compressed air, blow any dirt or debris from around the connection.
  4. Using the correct tool from the J 41769 , insert the tool into the female connector end, then push inward in order to release the quick connect locking tabs. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  5. Pull the fuel line connection apart.
  6. Use a clean shop towel in order to wipe off the male connection end.
  7. Inspect both ends of the fitting for dirt and burrs. Clean or replace the components as required.

Connect Procedure

  1. Apply a few drops of clean engine oil to the male connection end.
  2. Push both sides of the fitting together in order to engage the retaining tabs.
  3. Once installed, pull on both sides of the connection in order to ensure the connection is secure.
  4. Install the fuel line retainer.
  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Using compressed air, blow any dirt or debris from around the connection.
  3. This step applies to Bartholomew style connector ONLY. Squeeze the plastic quick connect fitting release tabs.
  4. This step applies to release tab style connector ONLY. Release the fitting by pushing the tab toward the other side of the slot in the fitting.
  5. This step applies to the squeeze-to-release style connector ONLY. Squeeze where indicated by the arrows shown above on both sides of the plastic ring surrounding the quick connect fitting.
  6. This step applies to the sliding retainer style connector ONLY. Release the fitting by pressing on one side of the release tab causing it to push in slightly. If the tab does not move try pressing the tab in from the opposite side. The tab will only move in one direction.
  7. This step applies to the Push Down TI style connector ONLY. Release the fitting by pressing on the tab indicated by the arrow.
  8. Pull the connection apart.
  1. Apply a few drops of clean engine oil to the male connection end.
  2. Push both sides of the quick-connect fitting together in order to cause the retaining feature to snap into place.
  3. Once installed, pull on both sides of the connection in order to make sure the connection is secure.

Scheme 2

Scheme 2: Fuel Pump Flow Control Module Replacement
Scheme 2: Fuel Pump Flow Control Module Replacement
CalloutComponent Name
Preliminary Procedure: Remove the spare tire. Refer to Spare Wheel Hoist Replacement .
1Fuel Pump Flow Control Module Fastener (Qty: 3) CAUTION: Refer to Fastener Caution Tighten: 8 N.m(71 lb in) Procedure: Partially loosen the fasteners from the slotted bracket.
2Fuel Pump Flow Control Module Procedure Disconnect the electrical connector. If replacing, reprogram the module. Refer to Control Module References
CAUTION
Refer to Fastener Caution

Fuel Tank Draining (Single Tank)

  1. Loosen the fuel fill cap in order to relieve the fuel tank vapor pressure.
  2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  3. Loosen the fuel fill hose clamp (6).
  4. Remove the fuel fill hose from the fuel tank.
  5. Insert the hose from the pump devise into the fuel tank.
  6. Using a hand or air operated pump device, drain as much fuel from the tank as possible.

J 45004 Fuel Tank Siphon Hose. See Special Tools .

  1. Remove the fuel fill cap.
  2. Remove the fuel tank filler housing to body TORX® screws (1) and retainer (2).
  3. Remove the fuel tank filler housing to fuel tank fill pipe screws.
  4. Remove the filler housing.
  5. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  6. Loosen the fill hose clamp (3) at the rear tank.
  7. Remove the fill hose from the rear tank.
  8. Insert the siphon hose from the J 45004 into the fuel tank. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  9. Attach the siphon hose from the J 45004 to the pump devise. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  10. Using a hand or air operated pump device, drain as much fuel from the tank as possible.

J 45004 Fuel Tank Siphon Hose. See Special Tools .

  1. Loosen the fuel fill cap in order to relieve the fuel tank vapor pressure.
  2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  3. Loosen the fuel fill hose clamp (1) at the front tank.
  4. Remove the fuel fill hose from the front tank.
  5. Insert the siphon hose from the J 45004 into the fuel tank. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  6. Attach the siphon hose from the J 45004 to the pump devise hose. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  7. Using a hand or air operated pump device, drain as much fuel from the tank as possible.
  1. Remove the rear fuel tank. Refer to «Fuel Tank Replacement (2500 LWB - 4.35L (11.5 gal) Tank Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (2500 LWB - 98.4L (26 gal) Tank Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the chassis wiring harness ground bolt (2).
  3. Remove the left rear lamp ground wire (4) and fill pipe ground strap (5) from the frame.
  4. Remove the rear axle vent hose clip from the fill pipe neck.
  5. Loosen the fuel tank fill hose clamp (1) at the front tank.
  6. Disconnect the fuel fill hose evaporative emission (EVAP) line quick connect fitting (2) from the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  7. Remove the fuel fill hose from the front tank.
  8. Remove the fuel fill hose integral clamp from the crossmember.
  9. Remove the fuel fill hose/pipe assembly.
  10. Cap the open end of the fuel tank in order to prevent fuel system contamination.
  11. Cap the open ends of the fuel/EVAP lines in order to prevent fuel/EVAP system contamination.
  12. If replacing any serviceable part of the fill pipe assembly proceed to the disassemble procedure, otherwise proceed to the installation procedure.

Disassemble

  1. Evaporative emission canister hose (1)
  2. Evaporative emission canister hose clamp (2)
  3. Fuel tank fill pipe clamp (3)
  4. Fuel tank fill pipe housing bolts (4)
  5. Fuel tank fill pipe housing (5)
  6. Fuel tank fill pipe restrictor (6)
  7. Fuel tank fill pipe clamp (7)
  8. Fuel tank vent hose (8)
  9. Fuel tank fill hose clamp (9)
  10. Evaporative emission canister hose clip (10)
  11. Fuel tank fill pipe (11)
  12. Fuel tank fill hose clamp (12)

Assemble

  1. Fuel tank fill hose clamp (12) Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  2. Fuel tank fill pipe (11)
  3. Evaporative emission canister hose clip (10)
  4. Fuel tank fill hose clamp (9) Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  5. Fuel tank vent hose (8)
  6. Fuel tank fill pipe clamp (7) Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  7. Fuel tank fill pipe restrictor (6)
  8. Fuel tank fill pipe housing (5)
  9. Fuel tank fill pipe housing bolts (4) Tighten: Tighten the bolts to 2.3 N.m (20 lb in).
  10. Fuel tank fill pipe clamp (3) Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  11. Evaporative emission canister hose clamp (2) Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  12. Evaporative emission canister hose (1)
  1. Remove the caps from the open end of the front fuel tank.
  2. Remove the caps from the fuel/EVAP lines.
  3. Install the fuel fill hose/pipe assembly.
  4. Install the fuel fill hose to the front tank.
  5. Connect the fuel fill hose EVAP line quick connect fitting (2) to the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Tighten the fuel tank fill hose clamp (1) at the front tank. Tighten: Tighten the clamps to 2.5 N.m (22 lb in).
  7. Install the fuel fill hose integral clamp to the crossmember.
  8. Install the rear axle vent hose clip to the fill pipe neck.
  9. Position the fill pipe ground strap (5) to the left rear lamp ground wire (4).
  10. Install the rear lamp ground wire (4) and ground strap (5) to the frame. Insert the lamp ground wire anti-rotation tab into the hole in the frame.
  11. Insert the chassis wiring harness ground bolt. Tighten: Tighten the bolt to 9 N.m (80 lb in).
  12. Install the rear fuel tank. Refer to «Fuel Tank Replacement (2500 LWB - 4.35L (11.5 gal) Tank Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (2500 LWB - 98.4L (26 gal) Tank Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .

Note. Clean the fuel connections and surrounding areas prior to disconnecting the lines in order to avoid possible contamination.

  1. Remove the fuel fill cap.
  2. Remove the fuel tank filler housing to body TORX® screws (1) and retainer (2).
  3. Remove the spare tire stowage lock cylinder, if necessary.
  4. Remove the spare tire, if necessary.
  5. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  6. Remove the rear axle vent hose clip (1) from the fill pipe.
  7. If necessary, remove the air suspension hose at the fill pipe.
  8. Remove the chassis wiring harness ground bolt (2).
  9. Remove the left rear lamp ground wire (4) and fill pipe ground strap (5) from the frame.
  10. Disconnect the fuel tank vent line quick connect fitting (5) from the fill pipe line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  11. Disconnect the fuel fill hose vent line quick connect fitting (3) from the EVAP canister vent solenoid valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  12. Loosen the fuel fill hose clamp (6).
  13. Remove the fuel fill pipe bracket bolts (2, 4).
  14. Remove the fuel fill hose from the fuel tank.
  15. Cap the fuel tank opening and EVAP vent line in order to prevent fuel/EVAP system contamination.
  16. If replacing any serviceable part of the fill pipe assembly proceed to the disassemble procedure, otherwise proceed to the installation procedure.

Disassemble Procedure

  1. Fuel tank filler vent hose (1)
  2. Fuel tank fill pipe housing bolts (2)
  3. Fuel tank fill pipe housing (3)
  4. Fuel tank fill hose (4)
  5. Fuel tank fill pipe clip (5)
  6. Fuel tank fill hose clamp (6)
  7. Fuel tank fill hose (7)
  8. Fuel tank fill hose clamp (8)
  9. Evaporative emission hose (9)
  10. Evaporative emission hose clamp (10)

Assemble Procedure

  1. Evaporative emission hose clamp (10) Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  2. Evaporative emission hose (9)
  3. Fuel tank fill hose clamp (8) Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  4. Fuel tank fill hose (7)
  5. Fuel tank fill hose clamp (6) Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  6. Fuel tank fill pipe clip (5)
  7. Fuel tank fill hose (4)
  8. Fuel tank fill pipe housing (3)
  9. Fuel tank fill pipe housing bolts (2) Tighten: Tighten the bolts to 2.3 N.m (20 lb in).
  10. Fuel tank filler vent hose (1)
  1. Remove the caps from the fuel tank opening and the EVAP vent line.
  2. Install the fuel fill hose to the fuel tank. Ensure that the notch in the hose is aligned with the notch on the fuel tank.
  3. Tighten the fuel fill hose clamp (6). Tighten: Tighten the clamps to 2.5 N.m (22 lb in).
  4. Install the fuel fill pipe bracket bolts (2, 4). Tighten: Tighten the bolt to 12 N.m (106 lb in).
  5. Connect the fuel fill hose vent line quick connect fitting (3) to the EVAP canister vent solenoid valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Connect the fuel fill pipe vent line to the fuel tank quick connect fitting (5). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  7. Position the fill pipe ground strap (5) to the left rear lamp ground wire (4).
  8. Install the rear lamp ground wire (4) and ground strap (5) to the frame. Insert the lamp ground wire anti-rotation tab into the hole in the frame.
  9. Install the chassis wiring harness ground bolt. Tighten: Tighten the bolt to 9 N.m (80 lb in).
  10. If necessary, install the air suspension hose at the fill pipe.
  11. Install the rear axle vent hose clip (1) to the fill pipe.
  12. Lower the vehicle.
  13. Install the fuel tank filler housing to body TORX® screws (1) and retainer (2). Tighten: Tighten the screws to 2.3 N.m (20 lb in).
  14. Install the spare tire, if necessary.
  15. Install the spare tire stowage lock cylinder, if necessary.
  16. Install the fuel fill cap.

J 45722 Fuel Sender Lock Ring Wrench. See Special Tools .

Note. Clean the fuel and evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the lines in order to avoid possible system contamination.

  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Drain the fuel tank. Refer to «Fuel Tank Draining (Single Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-tank-draining-single-tank) or «Fuel Tank Draining (Dual Tanks - Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Draining (Dual Tanks - Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Disconnect the fuel tank vent line quick connect fitting (5) from the fuel fill pipe vent line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Disconnect the chassis EVAP line quick connect fitting (4) from the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Disconnect the fuel tank fuel feed line quick connect fitting (5) from the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Cap the fuel and EVAP lines in order to prevent possible fuel and/or EVAP system contamination.
  7. Disconnect the fuel tank EVAP lines (1) from the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  8. Cap the EVAP lines in order to prevent possible EVAP system contamination.
  9. Disconnect the fuel tank EVAP line quick connect fitting (1) at the fuel tank vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  10. Using an adjustable jack, support the fuel tank.
  11. Remove the fuel tank strap bolts.
  12. Remove the fuel tank straps.
  13. With the aid of an assistant, carefully lower the rear of the fuel tank.
  14. Slide the front of the tank away from the frame.
  15. Lower the fuel tank slightly until the chassis wiring harness electrical connectors can be accessed.
  16. Disengage the chassis wiring harness electrical connector, connector position assurance (CPA) retainer at the module.
  17. Disconnect the chassis wiring harness electrical connectors (1) from the module and the fuel pressure sensor.
  18. Completely lower the fuel tank.
  19. With the aid of an assistant, place the fuel tank in a suitable work area.
  20. If replacing the fuel tank proceed to the next step, otherwise proceed to step 18 in the installation procedure.
  21. Remove the fuel feed line from the retaining feature (2) in the fuel tank.
  22. Open the fuel/EVAP line clip (1) and remove the fuel feed line from the clip.
  23. Disconnect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  24. Remove the fuel feed line from the fuel tank.
  25. Remove the fuel tank shield retainers (2 and 3) and shields (1 and 4).
  26. Remove the EVAP line from the fuel tank clips (1, 2, 4, and 8).
  27. Open the fuel tank clips (3, 5, 6, and 7) and remove the EVAP lines from the clips.
  28. Disconnect the EVAP line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  29. Remove the EVAP lines from the fuel tank.
  30. Using the J 45722 , remove the lock ring. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  31. Carefully lift the module from the fuel tank, enough to access the quick connect fitting (1) under the module cover. Disconnect the quick connect fitting. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  32. Remove the fuel tank module.
  33. Remove and discard the fuel tank module seal.
  34. Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gauge at 7 points.
  35. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  36. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
  1. If the fuel tank was replaced perform the following steps, otherwise proceed to step 18.
  2. Install a NEW fuel tank module seal onto the fuel tank.
  3. Pull the vent line in the fuel tank up as far as possible for ease of installation.
  4. Position the fuel tank module part way into the fuel tank.
  5. Connect the quick connect fitting (1) to the module cover. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Install the fuel tank module into the fuel tank.
  7. Place the lock ring into position.
  8. Rotate the lock ring counterclockwise using the J 45722 . See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  9. Install the EVAP lines to the fuel tank.
  10. Connect the EVAP line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  11. Install the EVAP lines to the fuel tank clips (3, 5, 6, and 7) and close the clips.
  12. Install the EVAP line to the fuel tank clips (1, 2, 4, and 8).
  13. Install the fuel tank shields (1 and 4) and retainers (2 and 3).
  14. Install the fuel feed line to the fuel tank.
  15. Connect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  16. Install the fuel feed line to the clip (1) and close the clip.
  17. Install the fuel feed line to the retaining feature (2) in the fuel tank.
  18. Place the fuel tank onto a suitable jack.
  19. With the aid of an assistant, partially raise the fuel tank until the electrical connections can be made.
  20. Connect the chassis wiring harness electrical connectors (1) to the fuel tank module and fuel pressure sensor.
  21. Engage the chassis harness electrical connector CPA retainer at the module electrical connector.
  22. Completely raise the fuel tank.
  23. Install the fuel tank straps.
  24. Install the fuel tank strap bolts. Tighten: Tighten the bolts to 40 N.m (30 lb ft).
  25. Remove the adjustable jack from the fuel tank.
  26. Connect the fuel tank EVAP line quick connect fitting (1) at the fuel tank vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  27. Remove the caps from the EVAP lines.
  28. Connect the fuel tank EVAP lines (1) to the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  29. Remove the caps from the fuel and EVAP lines.
  30. Connect the chassis EVAP line quick connect fitting (4) to the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  31. Connect the fuel tank fuel feed line quick connect fitting (5) to the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  32. Connect the fuel tank vent line quick connect fitting (5) to the fuel fill pipe line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  33. Install the fuel fill hose to the fuel tank. Ensure that the notch in the hose is aligned with the notch on the fuel tank.
  34. Tighten the fuel fill hose clamp (6). Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  35. Lower the vehicle.
  36. Refill the fuel tank.
  37. Install the fuel fill cap.
  38. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  39. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF, for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for fuel leaks.
  40. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

Note. Clean all fuel and evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the lines in order to avoid possible fuel and/or EVAP system contamination.

  1. Relieve the fuel system pressure. Refer to the «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Remove the spare tire stowage lock cylinder.
  3. Remove the spare tire.
  4. Drain the fuel tank. Refer to «Fuel Tank Draining (Single Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-tank-draining-single-tank) or «Fuel Tank Draining (Dual Tanks - Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Draining (Dual Tanks - Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Remove the rear exhaust insulator.
  6. Remove the spare tire hoist crossmember bolts and crossmember.
  7. Disconnect the rear fuel tank EVAP line quick connect fittings from the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  8. Disconnect the fuel and EVAP intermediate line quick connect fittings from the front tank. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  9. Disconnect the chassis harness electrical connector (1) from the fuel pressure sensor.
  10. Support the fuel tank with a suitable jack.
  11. Remove the fuel tank strap bolts.
  12. Remove the fuel tank straps.
  13. With the aid of an assistant, lower the rear tank until the intermediate line connections can be reached.
  14. Disconnect the fuel and EVAP intermediate line quick connect fittings from the rear tank. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  15. Remove the fuel and EVAP intermediate lines.
  16. Cap the fuel and EVAP lines in order to prevent possible EVAP/fuel system contamination.
  17. Disconnect the chassis harness electrical connector (2) from the fuel tank module.
  18. Completely lower the fuel tank.
  19. With the aid of an assistant, remove the tank from the jack.
  20. If replacing the fuel tank proceed to the next step, otherwise proceed to step 14 in the installation procedure.
  21. Remove the EVAP line from the clip (1) on the fuel tank.
  22. Open the EVAP line clip (2) and remove the EVAP line from the clip.
  23. Remove the EVAP lines from the clip (3).
  24. Disconnect the EVAP line quick connect fittings from the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  25. Remove the EVAP lines from the fuel tank.
  26. Using the J 45722 , remove the lock ring. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  27. Carefully lift the module from the fuel tank, enough to access the quick connect fitting under the module cover. Disconnect the quick connect fitting. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  28. Remove the fuel tank module.
  29. Remove and discard the fuel tank module seal.
  30. Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gauge at 7 points.
  31. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  32. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
  1. If the fuel tank was replaced perform the following steps, otherwise proceed to step 14.
  2. Install the NEW fuel tank module seal onto the fuel tank.
  3. Pull the vent line in the fuel tank up as far as possible for ease of installation.
  4. Position the fuel tank module part way into the fuel tank.
  5. Connect the quick connect fittings to the module cover. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Install the fuel tank module into the fuel tank.
  7. Place the lock ring into position.
  8. Rotate the lock ring counterclockwise using the J 45722 . See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  9. Install the EVAP lines to the fuel tank.
  10. Connect the EVAP line quick connect fittings to the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  11. Install the EVAP lines to the clip (3).
  12. Install the EVAP line to the clip (2) and close the clip.
  13. Install the EVAP line to the clip (1) on the fuel tank.
  14. With the aid of an assistant, install the tank onto the jack.
  15. Partially raise the fuel tank.
  16. Connect the chassis harness electrical connector (2) to the fuel tank module.
  17. Remove the caps from the fuel and EVAP lines.
  18. Install the fuel and EVAP intermediate lines.
  19. Connect the fuel and EVAP intermediate lines to the rear tank. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  20. With the aid of an assistant, completely raise the rear tank.
  21. Install the fuel tank straps.
  22. Install the fuel tank strap bolts. Tighten: Tighten the bolts to 40 N.m (30 lb ft).
  23. Remove the adjustable jack from under the fuel tank.
  24. Connect the chassis harness electrical connector (1) to the fuel pressure sensor.
  25. Connect the fuel and EVAP intermediate line quick connect fittings to the front tank. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  26. Connect the rear fuel tank EVAP line quick connect fittings to the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  27. Install the spare tire hoist crossmember and bolts. Tighten: Tighten the bolts to 50 N.m (37 lb ft).
  28. Install the rear exhaust insulator.
  29. Install the fuel fill hose (1, 3) to the fuel tank.
  30. Tighten the fuel fill hose clamp (2) at the fuel tank. Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  31. Lower the vehicle.
  32. Install the spare tire.
  33. Install the spare tire stowage lock cylinder.
  34. Install the fuel tank filler housing.
  35. Install the fuel tank filler housing to fuel tank fill pipe bolts. Tighten: Tighten the bolts to 2.3 N.m (20 lb in).
  36. Install the fuel tank filler housing to body TORX® screws (1) and retainer (2). Tighten: Tighten the screws to 2.3 N.m (20 lb in).
  37. Refill the fuel tank.
  38. Install the fuel fill cap.
  39. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  40. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF, for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for fuel leaks.
  41. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

J 45722 Fuel Sender Lock Ring Wrench. See Special Tools .

Note. Clean the fuel and evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the lines in order to avoid possible system contamination.

  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Drain the fuel tank. Refer to «Fuel Tank Draining (Single Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-tank-draining-single-tank) or «Fuel Tank Draining (Dual Tanks - Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Draining (Dual Tanks - Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Disconnect the fuel tank vent line quick connect fitting (5) from the fuel fill pipe vent line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Disconnect the chassis EVAP line quick connect fitting (4) from the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Disconnect the fuel tank fuel feed line quick connect fitting (5) from the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Cap the fuel and EVAP lines in order to prevent possible fuel and/or EVAP system contamination.
  7. Disconnect the fuel tank EVAP lines (1) from the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  8. Cap the EVAP lines in order to prevent possible EVAP system contamination.
  9. Disconnect the fuel tank EVAP line quick connect fitting (1) at the fuel tank vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  10. Using an adjustable jack, support the fuel tank.
  11. Remove the fuel tank strap bolts.
  12. Remove the fuel tank straps.
  13. With the aid of an assistant, carefully lower the rear of the fuel tank.
  14. Slide the front of the tank away from the frame.
  15. Lower the fuel tank slightly until the chassis wiring harness electrical connectors can be accessed.
  16. Disengage the chassis wiring harness electrical connector, connector position assurance (CPA) retainer at the module.
  17. Disconnect the chassis wiring harness electrical connectors (1) from the module and the fuel pressure sensor.
  18. Completely lower the fuel tank.
  19. With the aid of an assistant, Place the fuel tank in a suitable work area.
  20. If replacing the fuel tank proceed to the next step, otherwise proceed to step 18 in the installation procedure.
  21. Remove the fuel feed line from the retaining feature (2) in the fuel tank.
  22. Open the fuel/EVAP line clip (1) and remove the fuel feed line from the clip.
  23. Disconnect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  24. Remove the fuel feed line from the fuel tank.
  25. Remove the fuel tank shield retainers (2 and 3) and shields (1 and 4).
  26. Remove the EVAP line from the fuel tank clips (2 and 6).
  27. Open the fuel tank clips (1, 3, 4, and 5) and remove the EVAP lines from the clips.
  28. Disconnect the EVAP line quick connect fittings at the fuel tank module and fuel tank vent valves. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  29. Remove the EVAP lines from the fuel tank.
  30. Using the J 45722 , remove the lock ring. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  31. Carefully lift the module from the fuel tank, enough to access the quick connect fitting (1) under the module cover. Disconnect the quick connect fitting. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  32. Remove the fuel tank module.
  33. Remove and discard the fuel tank module seal.
  34. Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gauge at 7 points.
  35. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  36. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced
  1. If the fuel tank was replaced perform the following steps, otherwise proceed to step 18.
  2. Install the NEW fuel tank module seal onto the fuel tank.
  3. Pull the vent lines in the fuel tank up as far as possible for ease of installation.
  4. Position the fuel tank module part way into the fuel tank.
  5. Connect the quick connect fittings (1) to the module cover. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Install the fuel tank module into the fuel tank.
  7. Place the lock ring into position.
  8. Rotate the lock ring counterclockwise using the J 45722 . See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  9. Install the EVAP lines to the fuel tank.
  10. Connect the EVAP line quick connect fittings at the fuel tank module and fuel tank vent valves. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  11. Install the EVAP lines to the fuel tank clips (1, 3, 4, and 5) and close the clips.
  12. Install the EVAP line to the fuel tank clips (2 and 6).
  13. Install the fuel tank shields (1 and 4) and retainers (2 and 3).
  14. Install the fuel feed line to the fuel tank.
  15. Connect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  16. Install the fuel feed line to the clip (1) and close the clip.
  17. Install the fuel feed line to the retaining feature (2) in the fuel tank.
  18. Place the fuel tank onto a suitable jack.
  19. With the aid of an assistant, partially raise the fuel tank until the electrical connections can be made.
  20. Connect the chassis wiring harness electrical connectors (1) to the fuel tank module and fuel pressure sensor.
  21. Engage the chassis harness electrical connector CPA retainer at the module electrical connector.
  22. Completely raise the fuel tank.
  23. Install the fuel tank straps.
  24. Install the fuel tank strap bolts. Tighten: Tighten the bolts to 40 N.m (30 lb ft).
  25. Remove the adjustable jack from the fuel tank.
  26. Connect the fuel tank EVAP line quick connect fitting (1) at the fuel tank vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  27. Remove the caps from the EVAP lines.
  28. Connect the fuel tank EVAP lines (1) to the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  29. Remove the caps from the fuel and EVAP lines.
  30. Connect the chassis EVAP line quick connect fitting (4) to the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  31. Connect the fuel tank fuel feed line quick connect fitting (5) to the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  32. Connect the fuel tank vent line quick connect fitting (5) to the fuel fill pipe line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  33. Install the fuel fill hose to the fuel tank. Ensure that the notch in the hose is aligned with the notch on the fuel tank.
  34. Tighten the fuel fill hose clamp (6). Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  35. Lower the vehicle.
  36. Refill the fuel tank.
  37. Install the fuel fill cap.
  38. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  39. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF, for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for fuel leaks.
  40. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

J 45722 Fuel Sender Lock Ring Wrench. See Special Tools .

Note. Clean all fuel and evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the lines in order to avoid possible fuel and/or EVAP system contamination.

  1. Relieve the fuel system pressure. Refer to the «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Drain the fuel tank. Refer to «Fuel Tank Draining (Single Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-tank-draining-single-tank) or «Fuel Tank Draining (Dual Tanks - Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Draining (Dual Tanks - Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Disconnect the fill pipe evaporative emission (EVAP) line quick connect fitting (2) from the fuel tank vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Disconnect the EVAP line quick connect fitting (1) from the fuel tank vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Disconnect the chassis fuel feed and EVAP line quick connect fittings from the fuel tank line quick connect fittings. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Open the clip on the side of the fuel tank retaining the intermediate lines.
  7. Disconnect the fuel and EVAP intermediate line quick connect fittings from the front tank lines. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  8. Cap the fuel and EVAP lines in order to prevent possible fuel/EVAP system contamination.
  9. Using an adjustable jack, support the fuel tank.
  10. Remove the fuel tank strap bolts.
  11. Remove the fuel tank straps.
  12. With the aid of an assistant, carefully lower the fuel tank until the electrical connectors can be accessed.
  13. Disengage the connector position assurance (CPA) retainer.
  14. Disconnect the chassis harness electrical connector (1) from the fuel tank module.
  15. Completely lower the fuel tank.
  16. Place the fuel tank in a suitable work area.
  17. If replacing the fuel tank proceed to the next step, otherwise proceed to step 14 in the installation procedure.
  18. Remove the fuel tank shield retainers (1) and shield (2).
  19. Remove the EVAP line from the fuel tank clip (1).
  20. Open the fuel tank clips (2-7) and remove the fuel/EVAP lines from the clips.
  21. Disconnect the fuel/EVAP line quick connect fittings from the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  22. Remove the fuel/EVAP lines from the fuel tank.
  23. Using the J 45722 remove the lock ring. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  24. Carefully lift the module from the fuel tank, enough to access the quick connect fitting (1) under the module cover. Disconnect the quick connect fitting. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  25. Remove the fuel tank module.
  26. Remove and discard the fuel tank module seal.
  27. Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gauge at 7 points.
  28. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  29. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
  1. If the fuel tank was replaced perform the following steps, otherwise proceed to step 14.
  2. Install the NEW fuel tank module seal onto the fuel tank.
  3. Pull the vent line in the fuel tank up as far as possible for ease of installation.
  4. Position the fuel tank module part way into the fuel tank.
  5. Connect the quick connect fitting (1) to the module cover. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Install the fuel tank module into the fuel tank.
  7. Place the lock ring into position.
  8. Rotate the lock ring counterclockwise using the J 45722 . See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  9. Install the EVAP lines to the fuel tank.
  10. Connect the EVAP line quick connect fittings at the fuel tank module. Refer to «Evaporative Emission Line Replacement - Canister to Tank (1500 LWB - 98.4L (26 gal) Tank w/E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  11. Install the EVAP lines to the fuel tank clips (2-7) and close the clips.
  12. Install the EVAP line to the fuel tank clip (1).
  13. Install the fuel tank shield (2) and retainers (1).
  14. Place the fuel tank onto a suitable jack.
  15. With the aid of an assistant, partially raise the fuel tank.
  16. Connect the chassis harness electrical connector (1) to the fuel tank module.
  17. Engage the CPA retainer.
  18. With the aid of an assistant, completely raise the fuel tank.
  19. Install the fuel tank straps.
  20. Install the fuel tank strap bolts. Tighten: Tighten the bolts to 40 N.m (30 lb ft).
  21. Remove the adjustable jack from under the fuel tank.
  22. Remove the caps from the fuel and EVAP lines.
  23. Connect the fuel and EVAP intermediate lines to the front tank. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  24. Install the lines to the clip on the side of the fuel tank and close the clip.
  25. Connect the chassis fuel feed and EVAP line quick connect fittings to the fuel tank line quick connect fittings. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions)
  26. Connect the EVAP line quick connect fitting (1) to the fuel tank vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  27. Connect the fill pipe EVAP line quick connect fitting (2) to the fuel tank vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  28. Install the fuel fill hose to the fuel tank.
  29. Tighten the fuel fill hose clamp at the fuel tank. Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  30. Lower the vehicle.
  31. Refill the fuel tank.
  32. Install the fuel fill cap.
  33. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  34. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF, for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for fuel leaks.
  35. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

J 45722 Fuel Sender Lock Ring Wrench. See Special Tools .

Note. Clean the fuel and evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the lines in order to avoid possible system contamination.

  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Drain the fuel tank. Refer to «Fuel Tank Draining (Single Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-tank-draining-single-tank) or «Fuel Tank Draining (Dual Tanks - Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Draining (Dual Tanks - Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Disconnect the fuel tank vent line quick connect fitting (5) from the fuel fill pipe line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Disconnect the chassis EVAP line quick connect fitting (4) from the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Disconnect the fuel tank fuel feed line quick connect fitting (5) from the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Cap the fuel and EVAP lines in order to prevent possible fuel and/or EVAP system contamination.
  7. Disconnect the fuel tank EVAP lines (1) from the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  8. Cap the EVAP lines in order to prevent possible EVAP system contamination.
  9. Using an adjustable jack, support the fuel tank.
  10. Remove the fuel tank strap bolts.
  11. Remove the fuel tank straps.
  12. With the aid of an assistant, carefully lower the rear of the fuel tank.
  13. Slide the front of the tank away from the frame.
  14. Lower the fuel tank slightly until the chassis wiring harness electrical connectors can be accessed.
  15. Disengage the chassis wiring harness electrical connector, connector position assurance (CPA) retainer at the module.
  16. Disconnect the chassis wiring harness electrical connectors (1) from the module and the fuel pressure sensor.
  17. Completely lower the fuel tank.
  18. With the aid of an assistant, place the fuel tank in a suitable work area.
  19. If replacing the fuel tank proceed to the next step, otherwise proceed to step 18 in the installation procedure.
  20. Remove the fuel feed line from the retaining feature (2) in the fuel tank.
  21. Open the fuel/EVAP line clip (1) and remove the fuel feed line from the clip.
  22. Disconnect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  23. Remove the fuel feed line from the fuel tank.
  24. Remove the fuel tank shield retainers (2 and 3) and shields (1 and 4).
  25. Remove the EVAP line from the fuel tank clips (2 and 6).
  26. Open the fuel tank clips (1, 3, 4, and 5) and remove the EVAP lines from the clips.
  27. Disconnect the EVAP line quick connect fittings at the fuel tank module and fuel tank vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  28. Remove the EVAP lines from the fuel tank.
  29. Using the J 45722 , remove the lock ring. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  30. Carefully lift the module from the fuel tank, enough to access the quick connect fittings (1) under the module cover. Disconnect the quick connect fittings. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  31. Remove the fuel tank module.
  32. Remove and discard the fuel tank module seal.
  33. Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gauge at 7 points.
  34. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  35. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
  1. If the fuel tank was replaced perform the following steps, otherwise proceed to step 18.
  2. Install the NEW fuel tank module seal onto the fuel tank.
  3. Pull the vent lines in the fuel tank up as far as possible for ease of installation.
  4. Position the fuel tank module part way into the fuel tank.
  5. Connect the quick connect fittings (1) to the module cover. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Install the fuel tank module into the fuel tank.
  7. Place the lock ring into position.
  8. Rotate the lock ring counterclockwise using the J 45722 . See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  9. Install the EVAP lines to the fuel tank.
  10. Connect the EVAP line quick connect fittings at the fuel tank module and fuel tank vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  11. Install the EVAP lines to the fuel tank clips (1, 3, 4, and 5) and close the clips.
  12. Install the EVAP line to the fuel tank clips (2 and 6).
  13. Install the fuel tank shields (1 and 4) and retainers (2 and 3).
  14. Install the fuel feed line to the fuel tank.
  15. Connect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  16. Install the fuel feed line to the clip (1) and close the clip.
  17. Install the fuel feed line to the retaining feature (2) in the fuel tank.
  18. Place the fuel tank onto a suitable jack.
  19. With the aid of an assistant, partially raise the fuel tank until the electrical connections can be made.
  20. Connect the chassis wiring harness electrical connectors (1) to the fuel tank module and fuel pressure sensor.
  21. Engage the chassis harness electrical connector CPA retainer at the module electrical connector.
  22. Completely raise the fuel tank.
  23. Install the fuel tank straps.
  24. Install the fuel tank strap bolts. Tighten: Tighten the bolts to 40 N.m (30 lb ft).
  25. Remove the adjustable jack from the fuel tank.
  26. Remove the caps from the EVAP lines.
  27. Connect the fuel tank EVAP lines (1) to the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  28. Remove the caps from the fuel and EVAP lines.
  29. Connect the chassis EVAP line quick connect fitting (4) to the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  30. Connect the fuel tank fuel feed line quick connect fitting (5) to the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  31. Connect the fuel tank vent line quick connect fitting (5) to the fuel fill pipe line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  32. Install the fuel fill hose to the fuel tank. Ensure that the notch in the hose is aligned with the notch on the fuel tank.
  33. Tighten the fuel fill hose clamp (6). Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  34. Lower the vehicle.
  35. Refill the fuel tank.
  36. Install the fuel fill cap.
  37. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  38. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF, for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for fuel leaks.
  39. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

J 45722 Fuel Sender Lock Ring Wrench. See Special Tools .

Note. Clean the fuel and evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the lines in order to avoid possible system contamination.

  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Drain the fuel tank. Refer to «Fuel Tank Draining (Single Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-tank-draining-single-tank) or «Fuel Tank Draining (Dual Tanks - Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Draining (Dual Tanks - Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Disconnect the fuel tank vent line quick connect fitting (5) from the fuel fill pipe line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Disconnect the chassis EVAP line quick connect fitting (4) from the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Disconnect the fuel tank fuel feed line quick connect fitting (5) from the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Cap the fuel and EVAP lines in order to prevent possible fuel and/or EVAP system contamination.
  7. Disconnect the fuel tank EVAP lines (1) from the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  8. Cap the EVAP lines in order to prevent possible EVAP system contamination.
  9. Using an adjustable jack, support the fuel tank.
  10. Remove the fuel tank strap bolts.
  11. Remove the fuel tank straps.
  12. With the aid of an assistant, carefully lower the rear of the fuel tank.
  13. Slide the front of the tank away from the frame.
  14. Lower the fuel tank slightly until the chassis wiring harness electrical connectors can be accessed.
  15. Disengage the chassis wiring harness electrical connector, connector position assurance (CPA) retainer at the module.
  16. Disconnect the chassis wiring harness electrical connectors (1) from the module and the fuel pressure sensor.
  17. Completely lower the fuel tank.
  18. With the aid of an assistant, place the fuel tank in a suitable work area.
  19. If replacing the fuel tank proceed to the next step, otherwise proceed to step 18 in the installation procedure.
  20. Remove the fuel feed line from the retaining feature (2) in the fuel tank.
  21. Open the fuel/EVAP line clip (1) and remove the fuel feed line from the clip.
  22. Disconnect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  23. Remove the fuel feed line from the fuel tank.
  24. Remove the fuel tank shield retainers (2 and 3) and shields (1 and 4).
  25. Remove the EVAP line from the fuel tank clips (2 and 6).
  26. Open the fuel tank clips (1, 3, 4, and 5) and remove the EVAP lines from the clips.
  27. Disconnect the EVAP line quick connect fittings at the fuel tank module and fuel tank vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  28. Remove the EVAP lines from the fuel tank.
  29. Using the J 45722 , remove the lock ring. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  30. Carefully lift the module from the fuel tank, enough to access the quick connect fittings (1) under the module cover. Disconnect the quick connect fittings. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  31. Remove the fuel tank module.
  32. Remove and discard the fuel tank module seal.
  33. Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gauge at 7 points.
  34. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  35. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
  1. If the fuel tank was replaced perform the following steps, otherwise proceed to step 18.
  2. Install the NEW fuel tank module seal onto the fuel tank.
  3. Pull the vent lines in the fuel tank up as far as possible for ease of installation.
  4. Position the fuel tank module part way into the fuel tank.
  5. Connect the quick connect fittings (1) to the module cover. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Install the fuel tank module into the fuel tank.
  7. Place the lock ring into position.
  8. Rotate the lock ring counterclockwise using the J 45722 . See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  9. Install the EVAP lines to the fuel tank.
  10. Connect the EVAP line quick connect fittings at the fuel tank module and fuel tank vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  11. Install the EVAP lines to the fuel tank clips (1, 3, 4, and 5) and close the clips.
  12. Install the EVAP line to the fuel tank clips (2 and 6).
  13. Install the fuel tank shields (1 and 4) and retainers (2 and 3).
  14. Install the fuel feed line to the fuel tank.
  15. Connect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  16. Install the fuel feed line to the clip (1) and close the clip.
  17. Install the fuel feed line to the retaining feature (2) in the fuel tank.
  18. Place the fuel tank onto a suitable jack.
  19. With the aid of an assistant, partially raise the fuel tank until the electrical connections can be made.
  20. Connect the chassis wiring harness electrical connectors (1) to the fuel tank module and fuel pressure sensor.
  21. Engage the chassis harness electrical connector CPA retainer at the module electrical connector.
  22. Completely raise the fuel tank.
  23. Install the fuel tank straps.
  24. Install the fuel tank strap bolts. Tighten: Tighten the bolts to 40 N.m (30 lb ft).
  25. Remove the adjustable jack from the fuel tank.
  26. Remove the caps from the EVAP lines.
  27. Connect the fuel tank EVAP lines (1) to the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  28. Remove the caps from the fuel and EVAP lines.
  29. Connect the chassis EVAP line quick connect fitting (4) to the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  30. Connect the fuel tank fuel feed line quick connect fitting (5) to the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  31. Connect the fuel tank vent line quick connect fitting (5) to the fuel fill pipe line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  32. Install the fuel fill hose to the fuel tank. Ensure that the notch in the hose is aligned with the notch on the fuel tank.
  33. Tighten the fuel fill hose clamp (6). Tighten: Tighten the clamp to 2.5 N.m (22 lb in).
  34. Lower the vehicle.
  35. Refill the fuel tank.
  36. Install the fuel fill cap.
  37. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  38. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF, for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for fuel leaks.
  39. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Using a slight rocking motion while pulling straight up, remove the fuel tank pressure sensor (1).
  1. Install the fuel tank pressure sensor (1).
  2. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
IMPORTANTClean all fuel and evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the lines in order to avoid possible fuel and/or EVAP system contamination.
  1. Remove the intermediate fuel and evaporative emission (EVAP) lines. Refer to «Fuel Hose/Pipe Assembly Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Hose/Pipe Assembly Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Hose/Pipe Assembly Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Hose/Pipe Assembly Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Gently pry straight up, in order to remove the fuel pressure sensor.
  1. Lubricate the seal on the fuel pressure sensor.
  2. Press the fuel pressure sensor into the line.
  3. Install the intermediate fuel and EVAP lines. Refer to «Fuel Hose/Pipe Assembly Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Hose/Pipe Assembly Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Hose/Pipe Assembly Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Hose/Pipe Assembly Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Using a slight rocking motion while pulling straight up, remove the fuel tank pressure sensor (1).
  1. Install the fuel tank pressure sensor (1).
  2. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Disconnect the evaporative emission (EVAP) line quick connect fitting from the vent valve and reposition the line out of the way. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Using a slight rocking motion while pulling straight up, remove the fuel tank pressure sensor (1).
  1. Install the fuel tank pressure sensor (1).
  2. Position the EVAP line and connect the EVAP line quick connect fitting to the vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .

J 45722 Fuel Sender Lock Ring Wrench. See Special Tools .

  1. Remove the rear fuel tank. Refer to «Fuel Tank Replacement (2500 LWB - 4.35L (11.5 gal) Tank Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Disconnect the evaporative emission (EVAP) line quick connect fittings from the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Using the J 45722 and a long breaker bar, rotate the ring clockwise unlocking the fuel tank module lock ring. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  4. Remove the lock ring.
  5. Carefully lift the fuel tank module from the fuel tank enough to access the quick connect fittings below the module cover. Disconnect the quick connect fittings. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Remove the fuel tank module.
  7. Remove and discard the fuel tank module seal.
  8. Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gauge at 7 points.
  9. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  10. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
  1. Install a NEW fuel tank module seal onto the fuel tank.
  2. Pull the vent lines in the tank up as far as possible for ease of installation.
  3. Position the fuel tank module part way into the fuel tank.
  4. Connect the quick connect fittings to the module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Install the module into the fuel tank.
  6. Place the lock ring into position.
  7. Rotate the lock ring counterclockwise using the J 45722 until fully seated. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  8. Connect the EVAP line quick connect fittings to the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  9. Install the rear fuel tank. Refer to «Fuel Tank Replacement (2500 LWB - 4.35L (11.5 gal) Tank Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .

J 45722 Fuel Sender Lock Ring Wrench. See Special Tools .

  1. Remove the front fuel tank. Refer to «Fuel Tank Replacement (2500 LWB - 98.4L (26 gal) Tank Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Disconnect the fuel and evaporative emission (EVAP) lines from the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Using the J 45722 and a long breaker bar, rotate the ring clockwise unlocking the fuel tank module lock ring. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  4. Remove the lock ring.
  5. Carefully lift the fuel tank module from the fuel tank, enough to access the quick connect fitting (1) below the module cover. Disconnect the quick connect fittings. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Remove the fuel tank module.
  7. Remove and discard the fuel tank module seal.
  8. Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gauge at 7 points.
  9. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  10. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
  1. Install the NEW fuel tank module seal onto the fuel tank.
  2. Pull the vent line in the fuel tank up as far as possible for ease of installation.
  3. Position the fuel tank module part way into the fuel tank.
  4. Connect the quick connect fitting (1) to the module cover. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Install the fuel tank module into the fuel tank.
  6. Place the lock ring into position.
  7. Rotate the lock ring counterclockwise using the J 45722 until fully seated. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  8. Connect the fuel and EVAP lines to the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  9. Install the front fuel tank. Refer to «Fuel Tank Replacement (2500 LWB - 98.4L (26 gal) Tank Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .

J 45722 Fuel Sender Lock Ring Wrench. See Special Tools .

  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Disconnect fuel and evaporative emission (EVAP) lines from the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Disconnect the EVAP vent valve line quick connect fitting at the vent valve and reposition the line out of the way. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Using the J 45722 and a long breaker bar, rotate the ring clockwise unlocking the fuel tank module lock ring. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  5. Remove the lock ring.
  6. Carefully lift the module from the fuel tank enough to access the quick connect fitting (1) under the module cover. Disconnect the quick connect fitting. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  7. Remove the fuel tank module.
  8. Remove and discard the fuel tank module seal.
  9. Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gauge at 7 points.
  10. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  11. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
  1. Install the NEW fuel tank module seal onto the fuel tank.
  2. Pull the vent line in the fuel tank up as far as possible for ease of installation.
  3. Position the fuel tank module part way into the fuel tank.
  4. Connect the quick connect fitting (1) to the module cover. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Install the fuel tank module into the fuel tank.
  6. Place the lock ring into position.
  7. Rotate the lock ring counterclockwise using the J 45722 until fully seated. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  8. Position the EVAP vent valve line and connect the EVAP vent valve line quick connect fitting to the vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  9. Connect the fuel and EVAP lines to the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  10. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .

J 45722 Fuel Sender Lock Ring Wrench. See Special Tools .

  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Disconnect fuel and evaporative emission (EVAP) lines from the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Using the J 45722 and a long breaker bar, rotate the ring clockwise unlocking the fuel tank module lock ring. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  4. Remove the lock ring.
  5. Carefully lift the module from the fuel tank enough to access the quick connect fittings (1) under the module cover. Disconnect the quick connect fittings. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Remove the fuel tank module.
  7. Remove and discard the fuel tank module seal.
  8. Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gauge at 7 points.
  9. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  10. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
  1. Install the NEW fuel tank module seal onto the fuel tank.
  2. Pull the vent lines in the fuel tank up as far as possible for ease of installation.
  3. Position the fuel tank module part way into the fuel tank.
  4. Connect the quick connect fittings (1) to the module cover. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Install the fuel tank module into the fuel tank.
  6. Place the lock ring into position.
  7. Rotate the lock ring counterclockwise using the J 45722 until fully seated. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  8. Connect the fuel and EVAP lines to the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  9. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .

J 45722 Fuel Sender Lock Ring Wrench. See Special Tools .

  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Disconnect fuel and evaporative emission (EVAP) lines from the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Using the J 45722 and a long breaker bar, rotate the ring clockwise unlocking the fuel tank module lock ring. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  4. Remove the lock ring.
  5. Carefully lift the module from the fuel tank, enough to access the quick connect fitting (1) under the module cover. Disconnect the quick connect fitting. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Remove the fuel tank module.
  7. Remove and discard the fuel tank module seal.
  8. Place the lock ring on a flat surface. Measure the clearance between the lock ring and the flat surface using a feeler gauge at 7 points.
  9. If warpage is less than 0.41 mm (0.016 in), the lock ring does not require replacement.
  10. If warpage is greater than 0.41 mm (0.016 in), the lock ring must be replaced.
  1. Install a NEW fuel tank module seal onto the fuel tank.
  2. Pull the vent line in the fuel tank up as far as possible for ease of installation.
  3. Position the fuel tank module part way into the fuel tank.
  4. Connect the quick connect fitting (1) to the module cover. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Install the fuel tank module into the fuel tank.
  6. Place the lock ring into position.
  7. Rotate the lock ring counterclockwise using the J 45722 until fully seated. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  8. Connect the fuel and EVAP lines to the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  9. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  1. Remove the fuel tank module. Refer to «Fuel Tank Fuel Pump Module Replacement (2500 LWB - 98.4L (26 gal) Tank Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Disconnect the fuel level sensor electrical connector (1) from under the module cover.
  3. Release the fuel level sensor retaining clip (1).
  4. Slide the fuel level sensor down off of the bucket.
  1. Slide the fuel level sensor up onto the bucket until the sensor engages the retaining tab (1).
  2. Connect the fuel level sensor electrical connector (1) under the module cover.
  3. Install the fuel tank module. Refer to «Fuel Tank Fuel Pump Module Replacement (2500 LWB - 98.4L (26 gal) Tank Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  1. Remove the fuel tank module. Refer to «Fuel Tank Fuel Pump Module Replacement (2500 LWB - 43.5L (11.5 gal) Tank Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Disconnect the fuel level sensor electrical connector (3) from under the module cover.
  3. Release the level sensor retaining clip (1).
  4. Slide the fuel level sensor (2) down off the bucket.
  1. Slide the fuel level sensor (2) up onto the bucket until the sensor engages the retaining tab (1).
  2. Connect the fuel level sensor electrical connector (3) under the module cover.
  3. Install the fuel tank module. Refer to «Fuel Tank Fuel Pump Module Replacement (2500 LWB - 43.5L (11.5 gal) Tank Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  1. Remove the fuel tank module. Refer to «Fuel Tank Fuel Pump Module Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (1500 Series)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Using a small pick like tool, push in the retainer (1) in order to disengage the electrical connector.
  3. Remove the fuel level sensor electrical connector from the module cover.
  4. Push the level sensor locking tangs (2) in towards the inside of the module bucket.
  5. Slide the fuel level sensor up.
  6. Remove the fuel level sensor from the module.
  1. Install the fuel level sensor to the module.
  2. Position and slide the fuel level sensor down.
  3. Ensure that the level sensor tangs (2) are engaged at the bucket.
  4. Install the fuel level sensor electrical connector to the module cover.
  5. Ensure that the retainer (1) engaged the module cover.
  6. Install the fuel tank module. Refer to «Fuel Tank Fuel Pump Module Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (1500 Series)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  1. Remove the fuel tank module. Refer to «Fuel Tank Fuel Pump Module Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Disengage the retainers and slide the fuel level sensor up.
  3. Remove the fuel level sensor from the module.
  4. Disconnect the fuel level sensor electrical connectors (1).
  1. Connect the fuel level sensor electrical connectors (1).
  2. Install the fuel level sensor to the module.
  3. Position and slide the fuel level sensor down until the retainers engage the sensor.
  4. Install the fuel tank module. Refer to «Fuel Tank Fuel Pump Module Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
IMPORTANTClean the fuel feed line connection and surrounding area prior to disconnecting the fitting in order to avoid possible fuel system contamination.
  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the fuel feed line from the retaining feature (2) in the fuel tank.
  3. Open the fuel/EVAP line clip (1) and remove the fuel feed line from the clip.
  4. Disconnect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Remove the fuel feed line from the fuel tank.
  6. Cap the fuel feed port on the fuel tank module in order to prevent possible fuel system contamination.
  1. Install the fuel feed line to the fuel tank.
  2. Remove the cap from the fuel feed port on the fuel tank module.
  3. Connect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Install the fuel feed line to the clip (1) and close the clip.
  5. Install the fuel feed line to the retaining feature (2) in the fuel tank.
  6. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
IMPORTANTClean the fuel feed line connection and surrounding area prior to disconnecting the fitting in order to avoid possible fuel system contamination.
  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the fuel feed line from the retaining feature (2) in the fuel tank.
  3. Open the fuel/evaporative emission (EVAP) line clip (1) and remove the fuel feed line from the clip.
  4. Disconnect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Remove the fuel feed line from the fuel tank.
  6. Cap the fuel feed port on the fuel tank module in order to prevent possible fuel system contamination.
  1. Install the fuel feed line to the fuel tank.
  2. Remove the cap from the fuel feed port on the fuel tank module.
  3. Connect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Install the fuel feed line to the clip (1) and close the clip.
  5. Install the fuel feed line to the retaining feature (2) in the fuel tank.
  6. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
IMPORTANTClean the fuel feed line connection and surrounding area prior to disconnecting the fitting in order to avoid possible fuel system contamination.
  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the fuel feed line from the retaining feature (2) in the fuel tank.
  3. Open the fuel/EVAP line clip (1) and remove the fuel feed line from the clip.
  4. Disconnect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Remove the fuel feed line from the fuel tank.
  6. Cap the fuel feed port on the fuel tank module in order to prevent possible fuel system contamination.
  1. Install the fuel feed line to the fuel tank.
  2. Remove the cap from the fuel feed port on the fuel tank module.
  3. Connect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Install the fuel feed line to the clip (1) and close the clip.
  5. Install the fuel feed line to the retaining feature (2) in the fuel tank.
  6. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
IMPORTANTClean the fuel feed line connection and surrounding area prior to disconnecting the fitting in order to avoid possible fuel system contamination.
  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the fuel feed line from the retaining feature (2) in the fuel tank.
  3. Open the fuel/evaporative emission (EVAP) line clip (1) and remove the fuel feed line from the clip.
  4. Disconnect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Remove the fuel feed line from the fuel tank.
  6. Cap the fuel feed port on the fuel tank module in order to prevent possible fuel system contamination.
  1. Install the fuel feed line to the fuel tank.
  2. Remove the cap from the fuel feed port on the fuel tank module.
  3. Connect the fuel feed line quick connect fitting at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Install the fuel feed line to the clip (1) and close the clip.
  5. Install the fuel feed line to the retaining feature (2) in the fuel tank.
  6. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .

Note. Clean all fuel and evaporative emission (EVAP) lines connections and surrounding areas prior to disconnecting the lines in order to avoid possible fuel and/or EVAP system contamination.

  1. Relieve the fuel system pressure. Refer to the «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Disconnect the engine evaporative emission (EVAP) line (1) quick connect fitting from the chassis EVAP line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Disconnect the fuel feed line quick connect fitting (2) from the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Cap the fuel rail and EVAP pipes.
  5. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  6. Unbolt and reposition the front propeller shaft. Refer to «Front Propeller Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/driveshaft-universal-joints/#propeller-shaft-and-universal-joints) .
  7. Disconnect the chassis wiring harness electrical connector (1) from the fuel pressure sensor.
  8. Remove the fuel pipe bracket nut from the bellhousing stud.
  9. Remove the fuel line clip from the bracket on the automatic transmission.
  10. If equipped with 4-wheel drive (4WD), remove the fuel hose/pipe clip from the bracket on the transfer case.
  11. Remove the fuel line bracket bolt (3).
  12. Disconnect the chassis EVAP line quick connect fitting (4) from the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  13. Disconnect the fuel tank fuel feed line quick connect fitting (5) from the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  14. Cap the fuel and EVAP lines in order to prevent possible fuel and/or EVAP system contamination.
  15. Remove the fuel/EVAP line clips from the frame and crossmember.
  16. Remove the fuel line bracket locator tab from the frame.
  17. Remove the fuel/EVAP lines from the vehicle.
  1. Install the fuel/EVAP lines to the vehicle.
  2. Install the fuel line bracket locator tab to the frame.
  3. Install the fuel/EVAP line clips to the frame and crossmember.
  4. Install the fuel line bracket bolt (3). Tighten: Tighten the bolt to 12 N.m (106 lb in).
  5. Remove the caps from the fuel and EVAP lines.
  6. Connect the chassis EVAP line quick connect fitting (4) to the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  7. Connect the fuel tank fuel feed line quick connect fitting (5) to the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  8. If equipped with 4WD, install the fuel hose/pipe clip to the bracket on the transfer case.
  9. Install the fuel line clip to the bracket on the automatic transmission.
  10. Install the fuel pipe bracket nut to the bellhousing stud. Tighten: Tighten the nut to 20 N.m (15 lb ft).
  11. Position and install the front propeller shaft. Refer to «Front Propeller Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/driveshaft-universal-joints/#propeller-shaft-and-universal-joints) .
  12. Connect the chassis wiring harness electrical connector (1) to the fuel pressure sensor.
  13. Lower the vehicle.
  14. Remove the caps from the fuel rail and EVAP line.
  15. Connect the engine EVAP line (1) quick connect fitting to the chassis EVAP line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  16. Connect the fuel feed line quick connect fitting (2) to the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  17. Install the fuel fill cap.
  18. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  19. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF, for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for fuel leaks.
  20. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

Note. Clean all fuel and evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the lines in order to avoid possible fuel and/or EVAP system contamination.

  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Disconnect the fuel feed pipe (2) quick connect fitting at the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Disconnect the EVAP line (1) quick connect fitting from the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Cap the fuel rail and EVAP line in order to prevent fuel/EVAP system contamination.
  5. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  6. Remove the fuel pipe bracket nut.
  7. Remove the fuel pipe bracket from the bellhousing stud.
  8. Remove the fuel line clip from the bracket on the automatic transmission.
  9. If equipped with 4-wheel drive (4WD), remove the fuel hose/pipe clip from the bracket on the transfer case.
  10. Remove the fuel line bracket nuts.
  11. Remove the fuel/EVAP line bundle.
  1. Install the fuel/EVAP line bundle.
  2. Install the fuel line bracket nuts. Tighten: Tighten the bolt to 18 N.m (13 lb ft).
  3. If equipped with 4WD, install the fuel hose/pipe clip to the bracket on the transfer case.
  4. Install the fuel line clip to the bracket on the automatic transmission.
  5. Install the fuel pipe bracket to the bellhousing stud.
  6. Install the fuel pipe bracket nut. Tighten: Tighten the nut to 20 N.m (15 lb ft).
  7. Lower the vehicle.
  8. Remove the caps from the fuel rail and EVAP line.
  9. Connect the EVAP line (1) quick connect fitting to the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  10. Connect the fuel feed line (2) quick connect fitting to the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  11. Install the fuel fill cap.
  12. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  13. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF, for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for fuel leaks.
  14. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
  1. Raise and suitably support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  2. Disconnect the chassis wiring harness electrical connector (1) from the fuel pressure sensor.
  3. Wrap a shop towel around the fuel pressure sensor fitting in order to absorb any fuel that may leak out.
  4. Remove the fuel pressure sensor (1) from the fuel line.
  5. Remove and discard the fuel pressure sensor O-ring seal (2).
  1. Lubricate a NEW fuel pressure sensor O-ring seal with clean engine oil.
  2. Install the NEW fuel pressure sensor O-ring seal (2) onto the fuel line fitting.
  3. Wrap a shop towel around the fuel pressure sensor fitting in order to absorb any fuel that may leak out.
  4. Install the fuel pressure sensor (1) to the fuel line. Tighten: Tighten the sensor to 15 N.m (11 lb ft).
  5. Connect the chassis wiring harness electrical connector (1) to the fuel pressure sensor.
  6. Lower the vehicle.
  7. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF, for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for fuel leaks.

Fuel System Cleaning

IMPORTANTOnly use oil free compressed air to blow out the fuel pipes.
  1. Disconnect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  2. Remove the fuel tank module. Refer to «Fuel Tank Fuel Pump Module Replacement (2500 LWB - 43.5L (11.5 gal) Tank Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (2500 LWB - 98.4L (26 gal) Tank Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (1500 Series)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Inspect the fuel tank module strainer, if equipped. If the strainer is contaminated replace the fuel tank module.
  4. Inspect the fuel tank module inlet for dirt and debris. Replace the fuel tank module if you find dirt or debris in the fuel pump inlet.
  5. Flush the fuel tank with hot water.
  6. Pour the water out of the fuel module opening. Rock the tank to be sure that removal of the water from the tank is complete.
  7. Remove the fuel rail. Refer to «Fuel Injection Fuel Rail Assembly Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  8. Drain the fuel from the fuel rail. It will be necessary to remove the fuel injectors from the fuel rail to properly clear all debris from the fuel rail and fuel injectors. Refer to «Fuel Injector Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  9. Use light shop air to remove any debris from the fuel rail and injectors.
  10. Use light shop air in the opposite direction of the fuel flow in order to remove any debris from the fuel lines. Catch any fuel from the fuel lines with an approved gasoline container.
  11. Install the fuel injectors to the fuel rail. Refer to «Fuel Injector Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  12. Install the fuel rail. Refer to «Fuel Injection Fuel Rail Assembly Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  13. Install the fuel tank module. Refer to «Fuel Tank Fuel Pump Module Replacement (2500 LWB - 43.5L (11.5 gal) Tank Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (2500 LWB - 98.4L (26 gal) Tank Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (1500 Series)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Fuel Pump Module Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  14. Refill the fuel tank.
  15. Install the fuel fill cap.
  16. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  17. Purge the fuel tank module. Disconnect the fuel feed line quick connect fitting from the fuel tank to the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) . Connect a length of hose to the fuel feed pipe. Insert the other end of the hose into an empty 3.8 liter (1 gallon) approved gasoline container. Add 23 liters (6 gallons) of clean fuel into the fuel tank. Turn on the fuel pump using the scan tool until 2 liters (1/2 gallon) of fuel flows into the fuel container.
  18. Inspect for leaks. Turn the ignition switch ON for 2 seconds. Turn the ignition switch OFF for 10 seconds. Turn the ignition switch ON. Inspect for fuel leaks.

Note. An 8-digit identification number is located on the fuel rail. Refer to this identification number when servicing or when part replacement is required.

  1. Remove the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  3. Remove the engine wiring harness bracket nut (1).
  4. Disconnect the engine wiring harness electrical connector (2) from the evaporative emission (EVAP) purge solenoid.
  5. Disconnect the engine wiring harness electrical connector (3) from the generator.
  6. Disconnect the engine wiring harness electrical connector (4) from the manifold absolute pressure (MAP) sensor.
  7. Remove the connector position assurance (CPA) retainer (2).
  8. Disconnect the engine wiring harness electrical connector (1) from the ignition coil main electrical connector.
  9. Disconnect the engine wiring harness electrical connectors (3) from the fuel injectors, perform the following: Mark the connectors to their corresponding injectors to ensure correct reassembly. Pull the CPA retainer on the connector up 1 click. Push the tab on the connector in. Disconnect the fuel injector electrical connector.
  10. Remove the CPA retainer (2).
  11. Disconnect the engine wiring harness electrical connector (1) from the ignition coil main electrical connector.
  12. Disconnect the engine wiring harness electrical connector (3) from the electronic throttle control.
  13. Disconnect the engine wiring harness electrical connectors (7) from the fuel injectors, perform the following: Mark the connectors to their corresponding injectors to ensure correct reassembly. Pull the CPA retainer on the connector up 1 click. Push the tab on the connector in. Disconnect the fuel injector electrical connector.
  14. Remove the engine wiring harness clip (4) from the generator battery jumper cable.
  15. Remove the engine wiring harness clip (6) from the ignition coil bracket stud.
  16. Remove the negative battery cable stud (1) from the right cylinder head.
  17. Remove the negative battery cable terminal (2) and engine wiring harness ground terminal (3) from the cylinder head.
  18. Remove the engine wiring harness clip bolt (3) from the generator bracket.
  19. Gather the branches of the engine wiring harness and reposition the aside.
  20. Remove the positive crankcase ventilation (PCV) hose.
  21. Disconnect the chassis fuel feed pipe (2) quick connect fitting from the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  22. Disconnect the EVAP tube quick connect fitting at the intake manifold. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  23. Disconnect the chassis EVAP tube quick connect fitting at the EVAP canister purge solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  24. Disengage the retainer securing the EVAP canister purge solenoid to the fuel rail.
  25. Remove the EVAP tube and purge solenoid.
  26. Remove the fuel rail bolts.
  27. Remove the fuel rail assembly.
  28. Remove the fuel injector retainers (1).
  29. Remove the fuel injectors (3) from the fuel rail.
  30. Remove and discard the fuel injector upper and lower O-ring seals (2 and 4).
  1. Lubricate the NEW fuel injector O-ring seals with clean engine oil.
  2. Install the NEW fuel injector upper and lower O-ring seals (2 and 4) onto the injectors.
  3. Install the fuel injectors (3) into the fuel rails.
  4. Install the fuel injector retainers (1).
  5. Ensure the fuel injector lower O-ring seals are adequately lubricated, if not lubricate the fuel injector lower O-ring seals with clean engine oil.
  6. Position the fuel rail onto the intake manifold.
  7. Firmly push down on both the centers of the left and right fuel rails, until the rails are fully seated against the intake manifold.
  8. Install the fuel rail bolts. Tighten: Tighten the bolts to 10 N.m (89 lb in).
  9. Install the EVAP tube and purge solenoid.
  10. Install the EVAP canister purge solenoid to the fuel rail bracket and engage the retainer.
  11. Connect the chassis EVAP tube quick connect fitting at the EVAP canister purge solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  12. Connect the EVAP tube quick connect fitting at the intake manifold. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  13. Connect the chassis fuel feed pipe (2) quick connect fitting to the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  14. Install the PCV hose.
  15. Gather the branches of the engine wiring harness and position over the top of the engine.
  16. Position the engine wiring harness clip to the generator bracket and install the clip bolt (3). Tighten: Tighten the bolt to 9 N.m (80 lb in).
  17. Position the negative battery cable terminal (2) and engine wiring harness ground terminal (3) to the right cylinder head.
  18. Install the negative battery cable stud (1) to the cylinder head. Tighten: Tighten the stud to 25 N.m (18 lb ft).
  19. Connect the engine wiring harness electrical connector (1) to the ignition coil main electrical connector.
  20. Install the CPA retainer (2).
  21. Connect the engine wiring harness electrical connector (3) to the electronic throttle control.
  22. Connect the engine wiring harness electrical connectors (7) to the fuel injectors, perform the following: Ensure that the CPA retainer is pulled out 1 click. Connect the electrical connectors to their corresponding injectors. Push the CPA retainer in 1 click. Ensure that the connector is secured.
  23. Install the engine wiring harness clip (4) to the generator battery jumper cable.
  24. Install the engine wiring harness clip (6) to the ignition coil bracket stud.
  25. Connect the engine wiring harness electrical connector (1) to the ignition coil main electrical connector.
  26. Install the CPA retainer (2).
  27. Connect the engine wiring harness electrical connectors (3) to the fuel injectors, perform the following: Ensure that the CPA retainer is pulled out 1 click. Connect the electrical connectors to their corresponding injectors. Push the CPA retainer in 1 click. Ensure that the connector is secured.
  28. Connect the engine wiring harness electrical connector (4) to the MAP sensor.
  29. Connect the engine wiring harness electrical connector (3) to the generator.
  30. Connect the engine wiring harness electrical connector (2) to the EVAP purge solenoid.
  31. Install the engine wiring harness bracket nut (1). Tighten: Tighten the nut to 5 N.m (44 lb in).
  32. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  33. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for leaks.
  34. Install the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
CAUTIONUse care in removing the fuel injectors in order to prevent damage to the fuel injector electrical connector pins or the fuel injector nozzles. Do not immerse the fuel injector in any type of cleaner. The fuel injector is an electrical component and may be damaged by this cleaning method.

Note. An 8-digit identification number is located on the fuel rail. Refer to this identification number when servicing or when part replacement is required. The engine oil may be contaminated with fuel if the fuel injectors are leaking.

  1. Remove the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  3. Remove the engine wiring harness bracket nut (1).
  4. Disconnect the engine wiring harness electrical connector (2) from the evaporative emission (EVAP) purge solenoid.
  5. Disconnect the engine wiring harness electrical connector (3) from the generator.
  6. Disconnect the engine wiring harness electrical connector (4) from the manifold absolute pressure (MAP) sensor.
  7. Remove the connector position assurance (CPA) retainer (2).
  8. Disconnect the engine wiring harness electrical connector (1) from the ignition coil main electrical connector.
  9. Disconnect the engine wiring harness electrical connectors (3) from the fuel injectors, perform the following: Mark the connectors to their corresponding injectors to ensure correct reassembly. Pull the CPA retainer on the connector up 1 click. Push the tab on the connector in. Disconnect the fuel injector electrical connector.
  10. Remove the CPA retainer (2).
  11. Disconnect the engine wiring harness electrical connector (1) from the ignition coil main electrical connector.
  12. Disconnect the engine wiring harness electrical connector (3) from the electronic throttle control.
  13. Disconnect the engine wiring harness electrical connectors (7) from the fuel injectors, perform the following: Mark the connectors to their corresponding injectors to ensure correct reassembly. Pull the CPA retainer on the connector up 1 click. Push the tab on the connector in. Disconnect the fuel injector electrical connector.
  14. Remove the engine wiring harness clip (4) from the generator battery jumper cable.
  15. Remove the engine wiring harness clip (6) from the ignition coil bracket stud.
  16. Remove the negative battery cable stud (1) from the right cylinder head.
  17. Remove the negative battery cable terminal (2) and engine wiring harness ground terminal (3) from the cylinder head.
  18. Remove the engine wiring harness clip bolt (3) from the generator bracket.
  19. Gather the branches of the engine wiring harness and reposition the aside.
  20. Remove the positive crankcase ventilation (PCV) hose.
  21. Disconnect the chassis fuel feed pipe (2) quick connect fitting from the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  22. Disconnect the EVAP tube quick connect fitting at the intake manifold. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  23. Disconnect the chassis EVAP tube quick connect fitting at the EVAP canister purge solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  24. Disengage the retainer securing the EVAP canister purge solenoid to the fuel rail.
  25. Remove the EVAP tube and purge solenoid.
  26. Remove the fuel rail bolts.
  27. Remove the fuel rail assembly.
  28. Remove the fuel injector retainers (1).
  29. Remove the fuel injectors (3) from the fuel rail.
  30. Remove and discard the fuel injector upper and lower O-ring seals (2 and 4).
  1. Lubricate the NEW fuel injector O-ring seals with clean engine oil.
  2. Install the NEW fuel injector upper and lower O-ring seals (2 and 4) onto the injectors.
  3. Install the fuel injectors (3) into the fuel rails.
  4. Install the fuel injector retainers (1).
  5. Ensure the fuel injector lower O-ring seals are adequately lubricated, if not lubricate the fuel injector lower O-ring seals with clean engine oil.
  6. Position the fuel rail onto the intake manifold.
  7. Firmly push down on both the centers of the left and right fuel rails, until the rails are fully seated against the intake manifold.
  8. Install the fuel rail bolts. Tighten: Tighten the bolts to 10 N.m (89 lb in).
  9. Install the EVAP tube and purge solenoid.
  10. Install the EVAP canister purge solenoid to the fuel rail bracket and engage the retainer.
  11. Connect the chassis EVAP tube quick connect fitting at the EVAP canister purge solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  12. Connect the EVAP tube quick connect fitting at the intake manifold. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  13. Connect the chassis fuel feed pipe (2) quick connect fitting to the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  14. Install the PCV hose.
  15. Gather the branches of the engine wiring harness and position over the top of the engine.
  16. Position the engine wiring harness clip to the generator bracket and install the clip bolt (3). Tighten: Tighten the bolts to 9 N.m (80 lb in).
  17. Position the negative battery cable terminal (2) and engine wiring harness ground terminal (3) to the right cylinder head.
  18. Install the negative battery cable stud (1) to the cylinder head. Tighten: Tighten the stud to 25 N.m (18 lb ft).
  19. Connect the engine wiring harness electrical connector (1) to the ignition coil main electrical connector.
  20. Install the CPA retainer (2).
  21. Connect the engine wiring harness electrical connector (3) to the electronic throttle control.
  22. Connect the engine wiring harness electrical connectors (7) to the fuel injectors, perform the following: Ensure that the CPA retainer is pulled out 1 click. Connect the electrical connectors to their corresponding injectors. Push the CPA retainer in 1 click. Ensure that the connector is secured.
  23. Install the engine wiring harness clip (4) to the generator battery jumper cable.
  24. Install the engine wiring harness clip (6) to the ignition coil bracket stud.
  25. Connect the engine wiring harness electrical connector (1) to the ignition coil main electrical connector.
  26. Install the CPA retainer (2).
  27. Connect the engine wiring harness electrical connectors (3) to the fuel injectors, perform the following: Ensure that the CPA retainer is pulled out 1 click. Connect the electrical connectors to their corresponding injectors. Push the CPA retainer in 1 click. Ensure that the connector is secured.
  28. Connect the engine wiring harness electrical connector (4) to the MAP sensor.
  29. Connect the engine wiring harness electrical connector (3) to the generator.
  30. Connect the engine wiring harness electrical connector (2) to the EVAP purge solenoid.
  31. Install the engine wiring harness bracket nut (1). Tighten: Tighten the nut to 5 N.m (44 lb in).
  32. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  33. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for leaks.
  34. Install the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .

Fuel Injector Cleaning

Special Tools

  1. J 37287 Fuel Line Shut-Off Adapters. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  2. J 35800-A Fuel Injector Cleaner. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  3. J 42873-1 3/8 Fuel Line Shut-Off Valve
  4. J 42873-2 5/16 Return Pipe Shut-Off Valve
  5. J 42964-1 3/8 Fuel Pipe Shut-Off Valve
  6. J 42964-2 5/16 Fuel Pipe Shut-Off Valve
CAUTIONGM Upper Engine and Fuel Injector Cleaner is the only injector cleaning agent recommended. DO NOT USE OTHER CLEANING AGENTS AS THEY MAY CONTAIN METHANOL, WHICH CAN DAMAGE FUEL SYSTEM COMPONENTS. Under NO circumstances should the GM Upper Engine and Fuel Injector Cleaner be added to the vehicle fuel tank, as it may damage the fuel pump and other system components. Do not exceed the recommended cleaning solution concentration. Higher concentrations may damage fuel system components. Testing has demonstrated that exceeding the recommended cleaning solution concentration does not improve the effectiveness of this procedure.

Note. Vehicles with less than 160 km (100 mi) on the odometer should not have the injectors cleaned. These vehicles should have the injectors replaced.

  1. Obtain J 35800-A (2). See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  2. For 4, 5, and 6 cylinder engines, empty two of the 30 ml (1 oz) reservoirs of the GM Upper Engine and Fuel Injector Cleaner twin reservoir container into the J 35800-A , injector cleaning tank, then add 420 ml (14 oz) of regular unleaded gasoline. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) . If you are using any other brand of cleaning tank, you will need a total of 60 ml (2 oz) of GM Upper Engine and Fuel Injector Cleaner mixed with 420 ml (14 oz) of regular unleaded gasoline.
  3. For 8 cylinder engines, empty two of the 30 ml (1 oz) reservoirs of the GM Upper Engine and Fuel Injector Cleaner twin reservoir container into the J 35800-A , injector cleaning tank, then add 420 ml (14 oz) of regular unleaded gasoline. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) . If you are using any other brand of cleaning tank, you will need a total of 60 ml (2 oz) of GM Upper Engine and Fuel Injector Cleaner mixed with 420 ml (14 oz) of regular unleaded gasoline. This procedure will need to be repeated for an 8 cylinder engine. The 8 cylinder engines receive 960 ml total fluid-120 ml (4 oz) of GM Upper Engine and Fuel Injector Cleaner and 840 ml (28 oz) of gasoline.
  4. Fill the injector cleaning tank with regular unleaded gasoline. Be sure to follow all additional instructions provided with the tool.
  5. Electrically disable the vehicle fuel pump by removing the fuel pump relay and disconnecting the oil pressure switch connector, if equipped.
  6. Disconnect the fuel feed and return line, if equipped, at the fuel rail. Plug the fuel feed and return line, if equipped, coming off the fuel rail with J 37287 , or J 42964-1 , and J 42964-2 or J 42873-1 , and J 42873-2 as appropriate for the fuel system.
  7. Connect the J 35800-A to the vehicle fuel rail. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  8. Pressurize the J 35800-A to 510 kPa (75 psi). See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  9. Start and idle the engine until it stalls due to lack of fuel. This should take approximately 15-20 minutes.
  10. Turn the ignition to the OFF position.
  11. Injectors should be flow-tested at this point. If further cleaning is needed, a repeat of the above procedure should be done. When the injector restriction returns to zero, proceed to step 12.
  12. Disconnect the J 35800-A from the fuel rail. See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  13. Reconnect the vehicle fuel pump relay and oil pressure switch connector, if equipped.
  14. Remove the J 37287 , or J 42964-1 and J 42964-2 , or J 42873-1 and J 42873-2 and reconnect the vehicle fuel feed and return lines.
  15. Start and idle the vehicle for an additional two minutes to ensure residual injector cleaner is flushed from the fuel rail and fuel lines.
  16. Pour the entire contents of GM Fuel System Treatment Plus, GM P/N 88861011 (Canadian P/N 88861012) into a nearly empty tank and advise the customer to refuel with up to 76 L (20 gal) of fuel.
  17. Advise the customer to use only a Top Tier Detergent gasoline and to add a bottle of GM Fuel System Treatment Plus to the fuel tank at every oil change. Regular use of GM Fuel System Treatment Plus should keep the customer from having to repeat the injector cleaning procedure.
  18. Road test the vehicle to verify that the customer concern has been corrected.
IMPORTANTClean all evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting, in order to avoid possible EVAP system contamination.
  1. Remove the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Disconnect the EVAP line quick connect fitting from the EVAP canister purge solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Disconnect the engine wiring harness electrical connector (2) from the EVAP canister purge solenoid.
  4. Disconnect the chassis EVAP line quick connect fitting from the EVAP canister purge solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Disengage the retainer securing the EVAP canister purge solenoid to the fuel rail.
  6. Remove the EVAP canister purge solenoid.
  1. Install the EVAP canister purge solenoid.
  2. Install the EVAP canister purge solenoid to the fuel rail and engage the retainer.
  3. Connect the engine wiring harness electrical connector (2) to the EVAP canister purge solenoid.
  4. Connect the chassis EVAP line quick connect fitting to the EVAP canister purge solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Connect the EVAP line quick connect fitting to the EVAP canister purge solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Install the air cleaner outlet duct. Refer to «Air Cleaner Resonator Outlet Duct Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .

Note. Certain components and routing of the evaporative emission (EVAP) canister venting system may have been modified. Check for service bulletins. Clean all EVAP line connections and surrounding areas prior to disconnecting, in order to avoid possible EVAP system contamination.

  1. Remove the spare tire and wheel assembly.
  2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  3. Disconnect the chassis wiring harness electrical connector (1) from the EVAP canister vent solenoid.
  4. Disconnect the EVAP canister vent solenoid quick connect fitting (1) from the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Disconnect the fuel fill pipe EVAP line quick connect fitting (3) from the vent solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Disengage the retainer (1) securing the EVAP canister vent solenoid to the bracket.
  7. Remove the EVAP canister vent solenoid.
  1. Install the EVAP canister vent solenoid.
  2. Slide the EVAP canister vent solenoid onto the bracket until the retainer (1) engages the clip.
  3. Connect the EVAP canister vent solenoid quick connect fitting (1) to the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Connect the fuel fill pipe EVAP line quick connect fitting (3) to the vent solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Connect the chassis wiring harness electrical connector (1) to the EVAP canister vent solenoid.
  6. Lower the vehicle.
  7. Install the spare tire and wheel assembly.
IMPORTANTClean all evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting, in order to avoid possible EVAP system contamination.
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  2. Disconnect the chassis wiring harness electrical connector (1) from the EVAP canister vent solenoid.
  3. Disconnect the EVAP canister vent solenoid line quick connect fitting from the vent solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Disengage the retainer (1) securing the EVAP canister vent solenoid to the bracket.
  5. Remove the EVAP canister vent solenoid.
  1. Install the EVAP canister vent solenoid.
  2. Slide the EVAP canister vent solenoid onto the bracket until the retainer (1) engages the clip.
  3. Connect the EVAP canister vent solenoid line quick connect fitting to the vent solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Connect the chassis wiring harness electrical connector (1) to the EVAP canister vent solenoid.
  5. Lower the vehicle.

Note. Clean all fuel and evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the lines in order to avoid possible fuel and/or EVAP system contamination.

  1. Relieve the fuel system pressure. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the spare tire stowage lock cylinder.
  3. Remove the spare tire.
  4. Drain the rear fuel tank. Refer to «Fuel Tank Draining (Single Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-tank-draining-single-tank) or «Fuel Tank Draining (Dual Tanks - Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Draining (Dual Tanks - Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Remove the rear exhaust insulator.
  6. Remove the spare tire hoist crossmember bolts and crossmember.
  7. Disconnect the rear fuel tank EVAP line quick connect fittings from the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  8. Disconnect the fuel and EVAP intermediate line quick connect fittings from the front tank lines. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  9. Disconnect the chassis harness electrical connector (1) from the fuel pressure sensor.
  10. Support the fuel tank with a suitable jack.
  11. Remove the fuel tank strap bolts.
  12. Remove the fuel tank straps.
  13. With the aid of an assistant, lower the rear tank until the intermediate line connections can be reached.
  14. Disconnect the fuel and EVAP intermediate line quick connect fittings from the rear tank. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  15. Remove the fuel and EVAP intermediate line assembly.
  16. Cap the fuel and EVAP lines in order to prevent possible EVAP/fuel system contamination.
  1. Remove the caps from the fuel and EVAP lines.
  2. Install the fuel and EVAP intermediate lines.
  3. Connect the fuel and EVAP intermediate line quick connect fittings to the rear tank. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. With the aid of an assistant, completely raise the rear tank.
  5. Install the fuel tank straps.
  6. Install the fuel tank strap bolts. Tighten: Tighten the bolts to 40 N.m (30 lb ft).
  7. Remove the adjustable jack from under the fuel tank.
  8. Connect the chassis harness electrical connector (1) to the fuel pressure sensor.
  9. Connect the fuel and EVAP intermediate line quick connect fittings to the front tank lines. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  10. Connect the rear tank EVAP line quick connect fittings to the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  11. Install the spare tire hoist crossmember and bolts. Tighten: Tighten the bolts to 50 N.m (37 lb ft).
  12. Install the rear exhaust insulator.
  13. Install the spare tire.
  14. Install the spare tire stowage lock cylinder.
  15. Install the fuel tank filler housing.
  16. Install the fuel tank filler housing to fuel tank fill pipe bolts. Tighten: Tighten the bolts to 2.3 N.m (20 lb in).
  17. Install the fuel tank filler housing to body TORX® screws (1) and retainer (2). Tighten: Tighten the screws to 2.3 N.m (20 lb in).
  18. Refill the fuel tank.
  19. Install the fuel fill cap.
  20. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  21. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF, for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for fuel leaks.
  22. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
IMPORTANTClean all fuel and evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the lines in order to avoid possible fuel and/or EVAP system contamination.
  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (2500 LWB - 98.4L (26 gal) Tank Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the fuel tank shield retainers (1) and shield (2).
  3. Remove the EVAP line from the fuel tank clip (1).
  4. Open the fuel tank clips (2-7) and remove the fuel/EVAP lines from the clips.
  5. Disconnect the fuel/EVAP line quick connect fittings from the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Remove the fuel/EVAP lines from the fuel tank.
  1. Install the fuel/EVAP lines to the fuel tank.
  2. Connect the fuel/EVAP line quick connect fittings at the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Install the fuel/EVAP lines to the fuel tank clips (2-7) and close the clips.
  4. Install the fuel/EVAP line to the fuel tank clip (1).
  5. Install the fuel tank shield (2) and retainers (1).
  6. Install the fuel tank. Refer to «Fuel Tank Replacement (2500 LWB - 98.4L (26 gal) Tank Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
IMPORTANTClean all evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the fittings in order to avoid possible system contamination.
  1. Remove the upper intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
  2. Disconnect the EVAP line quick connect fitting at the intake manifold. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Disconnect the EVAP line quick connect fitting at the EVAP canister purge solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  1. Connect the EVAP line quick connect fitting at the EVAP canister purge solenoid. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Connect the EVAP line quick connect fitting at the intake manifold. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Install the upper intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

Note. Clean all fuel and evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the lines in order to avoid possible fuel and/or EVAP system contamination.

  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Disconnect the fuel feed pipe (2) quick connect fitting at the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Disconnect the EVAP line (1) quick connect fitting from the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Cap the fuel rail and EVAP line in order to prevent fuel/EVAP system contamination.
  5. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  6. Remove the fuel pipe bracket nut.
  7. Remove the fuel pipe bracket from the bellhousing stud.
  8. Remove the fuel line clip from the bracket on the automatic transmission.
  9. If equipped with 4-wheel drive (4WD), remove the fuel hose/pipe clip from the bracket on the transfer case.
  10. Remove the fuel line bracket nuts.
  11. Remove the fuel/EVAP line bundle.
  1. Install the fuel/EVAP line bundle.
  2. Install the fuel line bracket nuts. Tighten: Tighten the bolt to 18 N.m (13 lb ft).
  3. If equipped with 4WD, install the fuel hose/pipe clip to the bracket on the transfer case.
  4. Install the fuel line clip to the bracket on the automatic transmission.
  5. Install the fuel pipe bracket to the bellhousing stud.
  6. Install the fuel pipe bracket nut. Tighten: Tighten the nut to 20 N.m (15 lb ft).
  7. Lower the vehicle.
  8. Remove the caps from the fuel rail and EVAP line.
  9. Connect the EVAP line (1) quick connect fitting to the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  10. Connect the fuel feed line (2) quick connect fitting to the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  11. Install the fuel fill cap.
  12. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  13. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF, for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for fuel leaks.
  14. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

Note. Clean all fuel and evaporative emission (EVAP) lines connections and surrounding areas prior to disconnecting the lines in order to avoid possible fuel and/or EVAP system contamination.

  1. Relieve the fuel system pressure. Refer to the «Fuel Pressure Relief (CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Pressure Relief (Without CH-48027)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__fuel-pressure-relief-without-ch-48027) .
  2. Disconnect the EVAP line (1) quick connect fitting from the chassis EVAP line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Disconnect the fuel feed line quick connect fitting (2) from the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Cap the fuel rail and EVAP pipes.
  5. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  6. Unbolt and reposition the front propeller shaft. Refer to «Front Propeller Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/driveshaft-universal-joints/#propeller-shaft-and-universal-joints) .
  7. Disconnect the chassis wiring harness electrical connector (1) from the fuel pressure sensor.
  8. Remove the fuel pipe bracket nut from the bellhousing stud.
  9. Remove the fuel line clip from the bracket on the automatic transmission.
  10. If equipped with 4-wheel drive (4WD), remove the fuel hose/pipe clip from the bracket on the transfer case.
  11. Remove the fuel line bracket bolt (3).
  12. Disconnect the chassis EVAP line quick connect fitting (4) from the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  13. Disconnect the fuel tank fuel feed line quick connect fitting (5) from the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  14. Cap the fuel and EVAP lines in order to prevent possible fuel and/or EVAP system contamination.
  15. Remove the fuel/EVAP line clips from the frame and crossmember.
  16. Remove the fuel line bracket locator tab from the frame.
  17. Remove the fuel/EVAP lines from the vehicle.
  1. Install the fuel/EVAP lines to the vehicle.
  2. Install the fuel line bracket locator tab to the frame.
  3. Install the fuel/EVAP line clips to the frame and crossmember.
  4. Install the fuel line bracket bolt (3). Tighten: Tighten the bolt to 12 N.m (106 lb in).
  5. Remove the caps from the fuel and EVAP lines.
  6. Connect the chassis EVAP line quick connect fitting (4) to the fuel tank line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  7. Connect the fuel tank fuel feed line quick connect fitting (5) to the chassis line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  8. If equipped with 4WD, install the fuel hose/pipe clip to the bracket on the transfer case.
  9. Install the fuel line clip to the bracket on the automatic transmission.
  10. Install the fuel pipe bracket nut to the bellhousing stud. Tighten: Tighten the nut to 20 N.m (15 lb ft).
  11. Position and install the front propeller shaft. Refer to «Front Propeller Shaft Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/driveshaft-universal-joints/#propeller-shaft-and-universal-joints) .
  12. Connect the chassis wiring harness electrical connector (1) to the fuel pressure sensor.
  13. Lower the vehicle.
  14. Remove the caps from the fuel rail and EVAP line.
  15. Disconnect the EVAP line (1) quick connect fitting from the chassis EVAP line. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  16. Disconnect the fuel feed line quick connect fitting (2) from the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  17. Install the fuel fill cap.
  18. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnection and Connection»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  19. Use the following procedure in order to inspect for leaks: Turn the ignition ON, with the engine OFF, for 2 seconds. Turn the ignition OFF for 10 seconds. Turn the ignition ON, with the engine OFF. Inspect for fuel leaks.
  20. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
IMPORTANTClean the evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the fittings in order to avoid possible EVAP system contamination.
  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the fuel tank shield retainers (2, and 3) and shields (1, and 4).
  3. Remove the EVAP lines from the fuel tank clips (2, and 6).
  4. Open the fuel tank clips (1, 3, 4, and 5) and remove the EVAP lines from the clips.
  5. Disconnect the EVAP line quick connect fittings at the fuel tank module and vent valves. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Remove the EVAP lines from the fuel tank.
  1. Install the EVAP lines from the fuel tank.
  2. Connect the EVAP line quick connect fittings at the fuel tank module and vent valves. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Install the EVAP lines to the fuel tank clips (1, 3, 4, and 5) and close the clips.
  4. Install the EVAP lines to the fuel tank clips (2, and 6).
  5. Install the fuel tank shields (1, and 4) and retainers (2, and 3).
  6. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
IMPORTANTClean the evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the fittings in order to avoid possible EVAP system contamination.
  1. Remove the rear fuel tank. Refer to «Fuel Tank Replacement (2500 LWB - 4.35L (11.5 gal) Tank Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the EVAP line from the clip (1) on the fuel tank.
  3. Open the EVAP line clip (2) and remove the EVAP line from the clip.
  4. Remove the EVAP lines from the clip (3).
  5. Disconnect the EVAP line quick connect fittings from the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Remove the EVAP lines from the fuel tank.
  1. Install the EVAP lines to the fuel tank.
  2. Connect the EVAP line quick connect fittings to the fuel tank module. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Install the EVAP lines to the clip (3).
  4. Install the EVAP line to the clip (2) and close the clip.
  5. Install the EVAP line to the clip (1) on the fuel tank.
  6. Install the rear fuel tank. Refer to «Fuel Tank Replacement (2500 LWB - 4.35L (11.5 gal) Tank Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
IMPORTANTClean the evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the fittings in order to avoid possible EVAP system contamination.
  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the fuel tank shield retainers (2, and 3) and shields (1, and 4).
  3. Remove the EVAP line from the fuel tank clips (2, and 6).
  4. Open the fuel tank clips (1, 3, 4, and 5) and remove the EVAP lines from the clips.
  5. Disconnect the EVAP line quick connect fittings at the fuel tank module and vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Remove the EVAP lines from the fuel tank.
  1. Install the EVAP lines to the fuel tank.
  2. Connect the EVAP line quick connect fittings at the fuel tank module and vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Install the EVAP lines to the fuel tank clips (1, 3, 4, and 5) and close the clips.
  4. Install the EVAP line to the fuel tank clips (2, and 6).
  5. Install the fuel tank shields (1, and 4) and retainers (2, and 3).
  6. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
IMPORTANTClean the evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the fittings in order to avoid possible EVAP system contamination.
  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the fuel tank shield retainers (2, and 3) and shields (1, and 4).
  3. Remove the EVAP lines from the fuel tank clips (2, and 6).
  4. Open the fuel tank clips (1, 3, 4, and 5) and remove the EVAP lines from the clips.
  5. Disconnect the EVAP line quick connect fittings at the fuel tank module and vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Remove the EVAP lines from the fuel tank.
  1. Install the EVAP lines to the fuel tank.
  2. Connect the EVAP line quick connect fittings at the fuel tank module and vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Install the EVAP lines to the fuel tank clips (1, 3, 4, and 5) and close the clips.
  4. Install the EVAP lines to the fuel tank clips (2, and 6).
  5. Install the fuel tank shields (1, and 4) and retainers (2, and 3).
  6. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (2500 LWB - 4.35L (11.5 gal) Tank Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (2500 LWB - 98.4L (26 gal) Tank Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
IMPORTANTClean the evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting the fittings in order to avoid possible EVAP system contamination.
  1. Remove the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (2500 LWB - 4.35L (11.5 gal) Tank Rear)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (2500 LWB - 98.4L (26 gal) Tank Front)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 SWB - 98.4L (26 gal) Tank)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the fuel tank shield retainers (2, and 3) and shields (1, and 4).
  3. Remove the EVAP lines from the fuel tank clips (1, 2, 4 and 8).
  4. Open the fuel tank clips (3, 5, 6, and 7) and remove the EVAP lines from the clips.
  5. Disconnect the EVAP line quick connect fittings at the fuel tank module and vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Remove the EVAP lines from the fuel tank.
  1. Install the EVAP lines to the fuel tank.
  2. Connect the EVAP line quick connect fittings at the fuel tank module and vent valve. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Install the EVAP lines to the fuel tank clips (3, 5, 6, and 7) and close the clips.
  4. Install the EVAP lines to the fuel tank clips (1, 2, 4 and 8).
  5. Install the fuel tank shields (1, and 4) and retainers (2, and 3).
  6. Install the fuel tank. Refer to «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank + E85)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Fuel Tank Replacement (1500 LWB - 117.3L (31 gal) Tank )»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .

Note. Clean all evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting, in order to avoid possible EVAP system contamination.

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  2. Remove the EVAP canister bracket bolts and lower the EVAP canister.
  3. Disconnect the fuel tank EVAP line quick connect fittings (1) from the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  4. Disconnect the EVAP canister vent solenoid quick connecting fitting (1) from the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Remove the EVAP canister.
  6. If necessary, remove the EVAP canister to bracket bolt.
  7. If necessary, remove the EVAP canister from the bracket.
  1. If necessary, install the EVAP canister to the bracket.
  2. If necessary, install the EVAP canister to bracket bolt. Tighten: Tighten the bolt to 25 N.m (18 lb ft).
  3. Position the EVAP canister.
  4. Connect the EVAP canister vent solenoid quick connecting fitting (1) to the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Connect the fuel tank EVAP line quick connect fittings (1) to the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  6. Install the EVAP canister bracket bolts. Tighten: Tighten the bolts to 25 N.m (18 lb ft).
  7. Lower the vehicle.

Note. Clean all evaporative emission (EVAP) line connections and surrounding areas prior to disconnecting, in order to avoid possible EVAP system contamination.

  1. Remove the right side, rear bumper step pad. Refer to «Rear Bumper Step Outer Pad Replacement (Avalanche, Cadillac EXT)»(/cadillac/escalade/gmt900-2006-2014/remont/exterior-body-panels/#bumpers-and-fascia) .
  2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  3. Disconnect the chassis wiring harness electrical connector (1) from the EVAP canister vent solenoid.
  4. Disconnect the rear fuel tank EVAP canister quick connect fittings from the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  5. Remove the EVAP canister bolt.
  6. Lower the vehicle half way.
  7. Loosen the EVAP canister bracket nuts (1).
  8. Using a flat bladed screwdriver, disengage the front bracket clip.
  9. Using a flat bladed screwdriver, disengage the rear bracket clip.
  10. Remove the EVAP canister.
  11. Cap the EVAP lines in order to prevent possible EVAP system contamination.
  12. Disconnect the EVAP canister vent solenoid line (1) quick connect fitting at the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  1. Connect the EVAP canister vent solenoid line (1) quick connect fitting at the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Remove the caps from the EVAP lines.
  3. Install the EVAP canister.
  4. Using a flat bladed screwdriver, engage the rear bracket clip.
  5. Using a flat bladed screwdriver, engage the front bracket clip.
  6. Tighten the EVAP canister bracket nuts (1). Tighten: Tighten the nuts to 25 N.m (18 lb ft).
  7. Raise the vehicle.
  8. Install the EVAP canister bolt. Tighten: Tighten the nuts to 25 N.m (18 lb ft).
  9. Connect the rear fuel tank EVAP canister quick connect fittings to the EVAP canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  10. Connect the EVAP canister vent solenoid (CVS) electrical connector (1).
  11. Lower the vehicle.
  12. Install the right side, rear bumper step pad. Refer to «Rear Bumper Step Outer Pad Replacement (Avalanche, Cadillac EXT)»(/cadillac/escalade/gmt900-2006-2014/remont/exterior-body-panels/#bumpers-and-fascia) .

Tools Required

J 41413-200 Evaporative Emissions System Tester (EEST). See Special Tools .

Inspection Procedure

IMPORTANTDo not perform this procedure unless instructed by an evaporative emission (EVAP) diagnostic.
  1. Turn OFF the ignition.
  2. Remove the EVAP canister purge solenoid valve. Refer to «Evaporative Emission Canister Purge Solenoid Valve Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  3. Lightly tap the EVAP canister purge solenoid valve on a clean hard surface.
  4. Inspect for carbon particles exiting either of the vacuum ports. If no carbon particles are found reinstall the EVAP canister purge solenoid valve and continue with the EVAP cleaning procedure. Refer to «Evaporative Emission Canister Purge Solenoid Valve Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) . If carbon particles are found during the inspection procedure, replace the EVAP canister purge solenoid valve and continue with the EVAP cleaning procedure. Refer to «Evaporative Emission Canister Purge Solenoid Valve Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) . If you were instructed to replace the EVAP canister purge solenoid valve, and no carbon particles are found, return to the EVAP diagnostic procedure. Do not perform the EVAP cleaning procedure.

EVAP Cleaning Procedure

  1. Remove the EVAP canister. Refer to «Evaporative Emission Canister Replacement (1500 Series)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Evaporative Emission Canister Replacement (2500 Series)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  2. Turn OFF the main valve on the J 41413-200 . See «Special Tools»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-special-tools-equipment) .
  3. Disconnect the hose from the diagnostic station pressure regulator.
  4. Using a section of vacuum hose, connect one end to the diagnostic station pressure regulator.
  5. Connect the other end of the vacuum hose to the canister side of the purge pipe.
  6. Turn ON the main nitrogen cylinder valve and continue to discharge nitrogen for 15 seconds.
  7. If the nitrogen does not dislodge the carbon particles, replace the purge pipe.
  8. Return the EVAP pressure/purge diagnostic station to the stations original condition.
  9. Install a new EVAP canister. Refer to «Evaporative Emission Canister Replacement (1500 Series)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) or «Evaporative Emission Canister Replacement (2500 Series)»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
  10. Connect all previously disconnected EVAP pipe connectors.
  11. Lower the vehicle.
  12. Continue with the published service manual diagnostic DTC procedure.
  1. Remove the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
  2. Disconnect the ignition coil wiring harness electrical connector (1) from the ignition coil.
  3. Remove the spark plug wire from the ignition coil. Twist the spark plug wire boot a 1/2 turn. Pull only on the boot in order to remove the wire from the ignition coil.
  4. Remove the ignition coil bolts.
  5. Remove the ignition coil from the bracket. (left side shown, right side similar).
  6. There are 2 different manufacturers for the ignition coils and coil brackets. They are as follows
  7. The Melco® (1) ignition coil is a square design.
  8. The Delphi® (2) ignition coil is a round design.
  9. The Melco® ignition coil bracket (1) is a square design.
  10. The Delphi® ignition coil bracket (2) is a round design.
  1. Position the ignition coil to the ignition coil bracket. (left side shown, right side similar).
  2. Install the ignition coil bolts. Tighten: Tighten the bolts to 10 N.m (89 lb in).
  3. Install the spark plug wire to the ignition coil.
  4. Inspect the spark plug wire for proper installation: Push sideways on each boot in order the inspect the seating. Reinstall any loose boot.
  5. Connect the ignition coil wiring harness electrical connector (1) to the ignition coil.
  6. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

Spark Plug Wire Inspection

Spark plug wire integrity is vital for proper engine operation. A thorough inspection is necessary to accurately identify conditions that may affect engine operation. Inspect for the following conditions

  1. Correct routing of the spark plug wires, Incorrect routing may cause cross firing.
  2. Any signs of cracks or splits in the wires.
  3. Inspect each boot for any of the following conditions: Tearing Piercing Arcing Carbon tracking Corroded terminal

If corrosion, carbon tracking or arcing are indicated on a spark plug wire boot or terminal, replace the wire and the component connected to the wire.

  1. Remove the spark plug wire from the spark plug. Twist the spark plug wire boot a 1/2 turn. Pull only on the boot in order to remove the wire from the spark plug.
  2. Remove the spark plug wire from the ignition coil. Twist the spark plug wire boot a 1/2 turn. Pull only on the boot in order to remove the wire from the ignition coil.
  1. Install the spark plug wire to the ignition coil.
  2. Install the spark plug wire to the spark plug.
  3. Inspect the spark plug wire for proper installation: Push sideways on each boot in order to inspect the seating. Reinstall any loose boot.

Spark Plug Inspection

  1. Verify that the correct spark plug is installed. An incorrect spark plug causes driveability conditions. Refer to «Ignition System Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-specifications__ignition-system-specifications) for the correct spark plug.
  2. Ensure that the spark plug has the correct heat range. An incorrect heat range causes the following conditions: Spark plug fouling, replace with a colder plug Pre-ignition causing spark plug and/or engine damage , replace with a hotter plug
  3. Inspect the terminal post (1) for damage. Inspect for a bent or broken terminal post (1). Test for a loose terminal post (1) by twisting and pulling the post. The terminal post (1) should not move.
  4. Inspect the insulator (2) for flashover or carbon tracking, or soot. This is caused by the electrical charge traveling across the insulator (2) between the terminal post (1) and ground. Inspect for the following conditions: Inspect the spark plug boot for damage. Inspect the spark plug recess area of the cylinder head for moisture, such as oil, coolant, or water. A spark plug boot that is saturated will cause arcing to ground.
  5. Inspect the insulator (2) for cracks. All or part of the electrical charge may arc through the crack instead of the electrodes (3, 4).
  6. Inspect for evidence of improper arcing. Measure the gap between the center electrode (4) and the side electrode (3). Refer to «Ignition System Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-specifications__ignition-system-specifications) . An excessively wide electrode gap can prevent correct spark plug operation. Inspect for the correct spark plug torque. Refer to «Ignition System Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-specifications__ignition-system-specifications) . Insufficient torque can prevent correct spark plug operation. An over torqued spark plug, causes the insulator (2) to crack. Inspect for signs of tracking that occurred near the insulator tip instead of the center electrode (4). Inspect for a broken or worn side electrode (3). Inspect for a broken, worn, or loose center electrode (4) by shaking the spark plug. A rattling sound indicates internal damage. A loose center electrode (4) reduces the spark intensity. Inspect for bridged electrodes (3, 4). Deposits on the electrodes (3, 4) reduce or eliminates the gap. Inspect for worn or missing platinum pads on the electrodes (3, 4), if equipped. Inspect for excessive fouling.
  7. Inspect the spark plug recess area of the cylinder head for debris. Dirty or damaged threads can cause the spark plug not to seat correctly during installation.

Visual Inspection

  1. Normal operation - Brown to grayish-tan with small amounts of white powdery deposits are normal combustion by-products from fuels with additives.
  2. Carbon fouled - Dry, fluffy black carbon, or soot caused by the following conditions: Rich fuel mixtures Leaking fuel injectors Excessive fuel pressure Restricted air filter element Incorrect combustion Reduced ignition system voltage output Weak ignition coils Worn ignition wires Incorrect spark plug gap Excessive idling or slow speeds under light loads can keep spark plug temperatures so low that normal combustion deposits may not burn off.
  3. Deposit fouling - Oil, coolant, or additives that include substances such as silicone, very white coating, reduces the spark plug intensity. Most powdery deposits will not affect spark plug intensity unless they form into a glazing over the electrode.
  1. Remove the spark plug wire from the spark plug. Twist the spark plug wire boot a 1/2 turn. Pull only on the boot in order to remove the wire from the spark plug.
  2. Brush or using compressed air, blow away any dirt from around the spark plug.
  3. Remove the spark plug. If removing more than one plug, place each plug in a tray marked with the corresponding cylinder number.
  1. Inspect the spark plug gap. Adjust the gap as needed. Refer to «Ignition System Specifications»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-specifications__ignition-system-specifications) .
  2. Hand start the spark plug in the corresponding cylinder.
  3. Tighten the spark plug to 15 N.m (11 lb ft).
  4. Install the spark plug wire to the spark plug.
  5. Inspect the spark plug wire for proper installation: Push sideways on each boot in order to inspect the seating. Reinstall any loose boot.

Note. Perform the Crankshaft Position System Variation Learn whenever the crankshaft position sensor is removed or replaced.

  1. Remove the starter. Refer to «Starter Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  2. Working through the wheel well opening, disconnect the engine wiring harness electrical connector (1) from the crankshaft position (CKP) sensor.
  3. Clean the area around the CKP sensor before removal in order to avoid debris from entering the engine.
  4. Remove the CKP sensor bolt.
  5. Remove the CKP sensor.
  1. Install the CKP sensor.
  2. Install the CKP sensor bolt. Tighten: Tighten the bolt to 25 N.m (18 lb ft).
  3. Connect the engine wiring harness electrical connector (1) to the CKP sensor.
  4. Install the starter. Refer to «Starter Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/charging-system/#battery-charging-system-and-starting-system) .
  5. Perform the CKP system variation learn procedure. Refer to «Crankshaft Position System Variation Learn»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions__crankshaft-position-system-variation-learn) .

Scheme 3

Scheme 3: Camshaft Position Sensor Replacement
Scheme 3: Camshaft Position Sensor Replacement
CalloutComponent Name
Preliminary Procedure: Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Camshaft Position Sensor Bolt (Qty: 2) CAUTION: Refer to Fastener Caution . Procedure: Clean the area around the camshaft position (CMP) sensor before removal in order to prevent debris from entering the engine. Tighten: 12 N.m (106 lb in)
2Camshaft Position Sensor Bracket Assembly Procedure: Disconnect the electrical connectors.
3Camshaft Position Sensor
4Camshaft Position Sensor O-ring Seal Procedure: Lubricate the O-ring seal with clean engine oil.
CAUTION
Refer to Fastener Caution .
  1. Lift and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  2. Disconnect the engine wiring harness electrical connector (4) from knock sensor.
  3. Remove the knock sensor bolt (739) and knock sensor (718).
  1. Position the knock sensor (718) to the engine block and install the knock sensor bolt (739). Tighten the bolt to 25 N.m (18 lb ft)
  2. Connect the engine wiring harness electrical connector (4) to knock sensor.
  1. Lift and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#general-information__lifting-and-jacking-the-vehicle) .
  2. Disconnect the engine wiring harness electrical connector (2) from knock sensor.
  3. Remove the knock sensor bolt (739) and knock sensor (718).
  1. Position the knock sensor (718) to the engine block and install the knock sensor bolt (739). Tighten the bolt to 25 N.m (18 lb ft)
  2. Connect the engine wiring harness electrical connector (2) to knock sensor.

Scheme 4

Scheme 4: Air Cleaner Element Replacement
Scheme 4: Air Cleaner Element Replacement
CalloutComponent Name
1Air Cleaner Housing Cover Screw (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten: 3 N.m (27 lb in)
2Air Cleaner Housing
3Air Cleaner Element
CAUTION
Refer to Fastener Caution .

Scheme 5

Scheme 5: Air Cleaner Assembly Replacement
Scheme 5: Air Cleaner Assembly Replacement
CalloutComponent Name
Preliminary Procedures If replacing, remove the mass airflow sensor. Refer to Mass Airflow Sensor with Intake Air Temperature Sensor Replacement . Disconnect the air cleaner outlet duct from the air cleaner assembly. Refer to Air Cleaner Resonator Outlet Duct Replacement .
1Air Cleaner Assembly Tip: Pull upward in a jerking manner in order to disengage the air cleaner housing from the insulators.

Scheme 6

Scheme 6: Air Cleaner Bracket Replacement
Scheme 6: Air Cleaner Bracket Replacement
CalloutComponent Name
Preliminary Procedure: Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
1Air Cleaner Bracket Fastener (Qty: 4) CAUTION: Refer to Fastener Caution Tighten: 10 N.m(89 lb in)
2Air Cleaner Bracket
CAUTION
Refer to Fastener Caution
  1. Remove the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .
  2. Remove the positive crankcase ventilation (PCV) line (1) from the air cleaner outlet duct.
  3. Remove the radiator inlet hose clamp retainer from the outlet duct.
  4. Loosen the air cleaner outlet duct clamp (1) at the mass air flow (MAF)/intake air temperature (IAT) sensor.
  5. Loosen the air cleaner outlet duct clamp (2) at the throttle body.
  6. Lift up the air cleaner outlet duct at the resonator tab in order to separate the resonator from the stud on the intake manifold.
  7. Remove the air cleaner outlet duct from the throttle body and MAF/IAT sensor.
  1. Install the air cleaner outlet duct to the throttle body and MAF/IAT sensor. Ensure that the resonator tab aligns with the stud on the intake manifold.
  2. Push down on the air cleaner outlet duct resonator directly over the resonator tab in order to secure the resonator to the stud on the intake manifold.
  3. Tighten the air cleaner outlet duct clamp (2) at the throttle body to 4 N.m(35 lb in).
  4. Tighten the air cleaner outlet duct clamp (1) to 4 N.m(35 lb in) at the MAF/IAT sensor.
  5. Install the radiator inlet hose clamp retainer to the outlet duct.
  6. Install the PCV line (1) to the air cleaner outlet duct.
  7. Install the intake manifold sight shield. Refer to «Upper Intake Manifold Sight Shield Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/mechanical/#engine-mechanical-53l-60l-62l-repair-instructions-on-vehicle) .

See also:
• Battery Negative Cable Disconnection and Connection
• Control Module References
• Diagnostic Trouble Code (DTC) List - Vehicle
• DTC P0315
• Cooling System Draining and Filling (Static Fill)
• Fastener Caution
• Upper Intake Manifold Sight Shield Replacement
• Lifting and Jacking the Vehicle
• Front Propeller Shaft Replacement
• Excessive Force and Oxygen Sensor Caution
• Component Fastener Tightening Caution
• Heated Oxygen and Oxygen Sensor Caution
• Front Wheelhouse Liner Replacement - Right Side
• Special Tools
• Gasoline/Gasoline Vapors Warning
• Electrical Center Identification Views
• Safety Glasses Warning
• Fuel and Evaporative Emission Hose/Pipe Connection Cleaning Caution
• Relieving Fuel Pressure Warning
• Fuel Pipe Fitting Warning
• Spare Wheel Hoist Replacement
• Damage to Fuel Tank Straps Caution
• Rear Bumper Step Outer Pad Replacement (Avalanche, Cadillac EXT)
• Ignition System Specifications
• Air Cleaner Resonator Outlet Duct Replacement
• Fuel Pressure Relief (Without CH-48027)
• Fuel Tank Draining (Single Tank)
• Crankshaft Position System Variation Learn

More articles — Engine Performance