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Engine Control System & Fuel System - 2.8l, 3.0l - Repair Instructions Cadillac SRX II

Testing & Diagnostics 58 illustrations ~7618 words

Crankshaft Position System Variation Learn (LF1)

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. The scan tool only displays the condition that inhibits the procedure. The scan tool displays the signals of the following components: Crankshaft position sensors activity - If there is a crankshaft position sensor condition, refer to the applicable DTC that set. Camshaft position sensor signal activity - If there is a camshaft position sensor signal condition, refer to the applicable DTC that set. Engine coolant temperature (ECT) - If the engine coolant temperature is not warm enough, idle the engine until the engine coolant temperature reaches the correct temperature.

  1. Install a scan tool.
  2. Monitor the ECM for DTCs with a scan tool. If other DTCs are set, except DTC P0315, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/srx/ii-2009-2012/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) for the applicable DTC that set.
  3. With a scan tool, select the Crankshaft Position System Variation Learn Procedure and perform the following: Block drive wheels. Set parking brake. DO NOT apply brake pedal. Cycle ignition from OFF to ON. Apply and hold brake pedal for the duration of the procedure. Start and idle engine. Turn the air conditioning (A/C) OFF. The vehicle must remain in Park or Neutral. NOTE: While the learn procedure is in progress, release the throttle immediately when the engine starts to decelerate. The engine control is returned to the operator and the engine responds to throttle position after the learn procedure is complete. Accelerate to wide open throttle (WOT) and release when the fuel cut-off occurs.
  4. The scan tool displays Learn Status: Learned this Ignition. If the scan tool indicates that DTC P0315 ran and passed, the crankshaft position variation learn procedure is complete. If the scan tool indicates DTC P0315 failed or did not run, or another DTC is present, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/srx/ii-2009-2012/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) and perform the appropriate diagnostic procedure.
  5. 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.

Scheme 1

Scheme 1: Engine Control Module Replacement
Scheme 1: Engine Control Module Replacement
CalloutComponent Name
1Engine Control Module Cover
2Engine Control Module CAUTION: Turn 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. CAUTION: In order to prevent any possible electrostatic discharge damage to the ECM, do not touch the connector pins. Procedure Use a DVOM in order to measure the main relay circuit voltage at the ECM/TCM/IGN fuse in the underhood fuse block. Refer to Electrical Center Identification Views . Use a DVOM in order to measure the main relay circuit voltage at the TCM/BATT fuse in the underhood fuse block. Refer to Electrical Center Identification Views . Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection . Remove the TCM/BATT fuse from the underhood fuse block. Refer to Electrical Center Identification Views . Remove the ECM/TCM/IGN fuse from the underhood fuse block. Refer to Electrical Center Identification Views . Disconnect the electrical connectors. It is necessary to record the remaining engine oil life. If the replacement module is not programed with the remaining engine oil life, the engine oil life will default to 100 percent. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5000 km (3,000 mi) from the last engine oil change. It is necessary to record the remaining automatic transmission fluid life. If the replacement module is not programed with the remaining automatic transmission fluid life, the automatic transmission fluid life will default to 100 percent. If the replacement module is not programmed with the remaining automatic transmission fluid life, the automatic transmission fluid will need to be changed at 83000 km (50,000 mi) from the last automatic transmission fluid change. Ensure that there is no main relay circuit voltage (ECM/TCM/IGN Fuse). If replacing, reprogram the ECM. Refer to Engine Control Module Programming and Setup (LAU) or Engine Control Module Programming and Setup (LF1) .
CAUTION
Turn 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.
CAUTION
In order to prevent any possible electrostatic discharge damage to the ECM, do not touch the connector pins.

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.

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.

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.

The engine control module (ECM) learns the idle position of the throttle body to ensure the correct idle operation. Anytime the ECM or the throttle body is replaced, the ECM must learn the idle position. The engine idle may be unstable or a DTC may set if the idle position is not learned.

Conditions for Running the Idle Learn Procedure

  1. DTCs P0121, P0122, P0123, P0221, P0222, P0223, P0638, P2100, P2101, P2105, and P2119 are not set.
  2. The engine speed is less than 40 RPM.
  3. The vehicle speed is 0 km/h (0 mph).
  4. The accelerator pedal position is less than 14.9 percent.
  5. The ignition 1 voltage is more than 10 volts.
  6. The engine coolant temperature is between 5-85°C (41-185°F).
  7. The intake air temperature is between 5-60°C (41-140°F).

Idle Learn Procedure

  1. Turn OFF the ignition for 30 seconds.
  2. Turn ON the ignition, with the engine OFF for 60 seconds.
  3. Turn OFF the ignition.
  4. Turn ON the ignition, with the engine OFF.
  5. Clear the DTCs with a scan tool.

Scheme 2

Scheme 2: Engine Coolant Temperature Sensor Replacement (LF1)
Scheme 2: Engine Coolant Temperature Sensor Replacement (LF1)
CalloutComponent Name
Preliminary Procedure: Partially drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill LF1) or Cooling System Draining and Filling - Vac-N-Fill (GE 47716) or Cooling System Draining and Filling (Static Fill LAU) .
1Engine Coolant Temperature Sensor CAUTION: Refer to Fastener Caution . Procedure Reposition the sensor heat shield. Disconnect the ECT sensor harness connector. Tighten: 20 N.m (35 lb in)
CAUTION
Refer to Fastener Caution .

Scheme 3

Scheme 3: Engine Coolant Temperature Sensor Replacement (LAU)
Scheme 3: Engine Coolant Temperature Sensor Replacement (LAU)
CalloutComponent Name
Preliminary Procedures Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement . Remove the oil level indicator tube. Refer to Oil Level Indicator Tube Replacement (LAU) . Partially drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill LF1) or Cooling System Draining and Filling - Vac-N-Fill (GE 47716) or Cooling System Draining and Filling (Static Fill LAU) .
1Engine Coolant Temperature Sensor CAUTION: Refer to Fastener Caution . Procedure: Disconnect the electrical connector. Tighten: 22 N.m (16 lb ft)
CAUTION
Refer to Fastener Caution .

Scheme 4

Scheme 4: Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (LF1)
Scheme 4: Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (LF1)
CalloutComponent Name
1Mass Airflow Sensor Fastener (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 3 N.m (27 lb in)
2Mass Airflow Sensor with Intake Air Temperature Sensor Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 5

Scheme 5: Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (LAU)
Scheme 5: Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (LAU)
CalloutComponent Name
1Mass Airflow Sensor Fastener (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 4 N.m (35 lb in)
2Mass Airflow Sensor with Intake Air Temperature Sensor Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 6

Scheme 6: Manifold Absolute Pressure Sensor Replacement (LF1)
Scheme 6: Manifold Absolute Pressure Sensor Replacement (LF1)
CalloutComponent Name
Preliminary Procedure: Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
1Bolt CAUTION: Refer to Fastener Caution . Tighten: 5 N.m (44 lb in)
2Manifold Absolute Pressure Sensor Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 7

Scheme 7: Throttle Inlet Absolute Pressure Sensor Replacement (LF1)
Scheme 7: Throttle Inlet Absolute Pressure Sensor Replacement (LF1)
CalloutComponent Name
1Throttle Inlet Absolute Pressure Sensor Fastener CAUTION: Refer to Fastener Caution . Tighten: 4 N.m (35 lb in)
2Throttle Inlet Absolute Pressure Sensor Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 8

Scheme 8: Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (LF1)
Scheme 8: Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (LF1)
CalloutComponent Name
Preliminary Procedures If equipped with FWD, raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . If equipped with AWD, lower the front suspension frame. Refer to Drivetrain and Front Suspension Frame Replacement .
1Heated Oxygen Sensor CAUTION: Refer to Heated Oxygen and Oxygen Sensor Caution . CAUTION: Refer to Fastener Caution . Procedure Disconnect the heated oxygen sensor harness connector. If reinstalling the old sensor, coat the threads with anti-sieze compound. Refer to Adhesives, Fluids, Lubricants, and Sealers . Tip: A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphic and glass beads. The graphic 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-sieze compound applied before reinstallation. Tighten: 42 N.m (31 lb in)
CAUTION
Refer to Fastener Caution .

Scheme 9

Scheme 9: Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LF1)
Scheme 9: Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LF1)
CalloutComponent Name
Preliminary Procedure: Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Heated Oxygen Sensor CAUTION: Refer to Heated Oxygen and Oxygen Sensor Caution . CAUTION: Refer to Fastener Caution . Procedure Disconnect the heated oxygen sensor harness connector. If reinstalling the old sensor, coat the threads with anti-sieze compound. Refer to Adhesives, Fluids, Lubricants, and Sealers . Tip: A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphic and glass beads. The graphic 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-sieze compound applied before reinstallation. Tighten: 42 N.m (31 lb in)
CAUTION
Refer to Fastener Caution .

Scheme 10

Scheme 10: Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF1)
Scheme 10: Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF1)
CalloutComponent Name
1Heated Oxygen Sensor CAUTION: Refer to Heated Oxygen and Oxygen Sensor Caution . CAUTION: Refer to Fastener Caution . Procedure Disconnect the heated oxygen sensor harness connector. If reinstalling the old sensor, coat the threads with anti-sieze compound. Refer to Adhesives, Fluids, Lubricants, and Sealers . Tip: A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphic and glass beads. The graphic 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-sieze compound applied before reinstallation. Tighten: 42 N.m (31 lb in)
CAUTION
Refer to Fastener Caution .

Scheme 11

Scheme 11: Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF1)
Scheme 11: Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF1)
CalloutComponent Name
Preliminary Procedure: Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Heated Oxygen Sensor CAUTION: Refer to Heated Oxygen and Oxygen Sensor Caution . CAUTION: Refer to Fastener Caution . Procedure Disconnect the heated oxygen sensor harness connector. If reinstalling the old sensor, coat the threads with anti-sieze compound. Refer to Adhesives, Fluids, Lubricants, and Sealers . Tip: A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphic and glass beads. The graphic 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-sieze compound applied before reinstallation. Tighten: 42 N.m (31 lb in)
CAUTION
Refer to Fastener Caution .

Scheme 12

Scheme 12: Heated Oxygen Sensor Replacement - Sensor 1 (LAU)
Scheme 12: Heated Oxygen Sensor Replacement - Sensor 1 (LAU)
CalloutComponent Name
Preliminary Procedure: Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
1Catalytic Converter Front Heat Shield Fastener (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten: 8 N.m (71 lb in)
2Catalytic Converter Front Heat Shield
3Heated Oxygen Sensor Procedure: Disconnect the electrical connector. Tighten: 42 N.m (31 lb ft)
CAUTION
Refer to Fastener Caution .

Scheme 13

Scheme 13: Heated Oxygen Sensor Replacement - Sensor 2 (LAU)
Scheme 13: Heated Oxygen Sensor Replacement - Sensor 2 (LAU)
CalloutComponent Name
Preliminary Procedure: Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
1Heated Oxygen Sensor CAUTION: Refer to Fastener Caution . Procedure: Disconnect the electrical connector. Tighten: 42 N.m (31 lb ft)
CAUTION
Refer to Fastener Caution .

Scheme 14

Scheme 14: Accelerator Pedal with Position Sensor Assembly Replacement
Scheme 14: Accelerator Pedal with Position Sensor Assembly Replacement
CalloutComponent Name
1Accelerator Pedal Position Sensor Assembly Bolt CAUTION: Refer to Fastener Caution Tighten: 9 N.m (80 lb in)
2Accelerator Pedal Position Sensor Assembly
CAUTION
Refer to Fastener Caution

Scheme 15

Scheme 15: Throttle Body Assembly Replacement (LF1)
Scheme 15: Throttle Body Assembly Replacement (LF1)
CalloutComponent Name
Preliminary Procedure: Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement (LF1) .
1Throttle Body Fastener (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Throttle Body Procedure Disconnect the throttle body harness electrical connector. Install a NEW throttle body seal. Perform the throttle learn procedure. Refer to Throttle/Idle Learn (LF1, LFW) .
CAUTION
Refer to Fastener Caution .

Scheme 16

Scheme 16: Throttle Body Assembly Replacement (LAU)
Scheme 16: Throttle Body Assembly Replacement (LAU)
CalloutComponent Name
Preliminary Procedure: Remove the charge air cooler outlet duct and support bracket. Refer to Charge Air Cooler Outlet Duct Replacement .
1Throttle Body Fastener (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Throttle Body Procedure Disconnect the electrical connector. Install a NEW throttle body seal. Perform the throttle learn procedure. Refer to Throttle/Idle Learn (Without LF1, LFW) .
CAUTION
Refer to Fastener Caution .

Throttle Body Inspection and Cleaning

Note. Over extended time and mileage, deposits may accumulate on the back of the throttle valve plate. The source of the deposit is exhaust gas recirculation (EGR) gas. Typically these deposits pose no problem. Occasionally the deposit may accumulate to a point where perceived pedal effort or throttle valve movement is effected. This procedure should not be performed on vehicles with mileage under 80 450 km (50,000 mi).

  1. Remove the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Air Cleaner Outlet Duct Replacement (LAU)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Inspect the throttle body bore and the throttle valve plate for deposits. You will need to open the throttle valve in order to inspect all surfaces.
  3. Clean the throttle body bore and the throttle valve plate using a clean shop towel with GM top engine cleaner. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-specifications__adhesives-fluids-lubricants-and-sealers) .
  4. Install the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Air Cleaner Outlet Duct Replacement (LAU)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Perform the throttle/idle learn procedure. Refer to «Throttle/Idle Learn (Without LF1, LFW)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Throttle/Idle Learn ( With LF1, LFW)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .

Fuel Pressure Relief

WARNINGFuel that flows out at high pressure can cause serious injury to the skin and eyes. ALWAYS depressurize the fuel system before removing components that are under high fuel pressure.
  1. Install a scan tool to the vehicle and command the fuel pump relay OFF, allowing the low pressure fuel pump to shut off.
  2. Start the vehicle and allow the engine to idle until the engine stops. The engine will stop in approximately 20-30 seconds.
  3. Turn the ignition OFF.
  4. Using the scan tool, verify that there is little to no fuel pressure, if there still is fuel pressure repeat step 2.

Special Tools

CH 48027: Digital Pressure Gauge

For equivalent regional tools, refer to Special Tools

Installation Procedure

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»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions__fuel-pressure-relief) .
  2. Connect the CH 48027: gauge (1) to the CH 48027: adapter (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: gauge (1), refer to the manufacture's directions.

Removal Procedure

  1. Relieve the fuel system pressure, if required. Perform the following steps: Wrap a shop towel around the fuel rail service port. Place the hose on the CH 48027: adapter (2) into an approved gasoline container. Open the valve on the CH 48027: adapter (2) in order to bleed any fuel from the fuel rail. Close the valve on the CH 48027: adapter (2). Remove the hose on the CH 48027: adapter (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: gauge (1) from the CH 48027: gauge (2).
  3. Disconnect the CH 48027: adapter (2) from the CH 48027: adapter (3).
  4. Disconnect the CH 48027: adapter (3) from the fuel rail service port.
  5. Install the fuel rail service port cap.
  6. Install the engine cover, if required.
  7. Tighten the fuel fill cap.
  1. CH-41769: Fuel Line Disconnect Tool Set
  2. CH-44581: Fuel Line Disconnect Tool

For equivalent regional tools, refer to Special Tools .

  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions__fuel-pressure-relief) .
  2. Remove the retainer from the quick-connect fitting.
  3. Blow dirt out of the fitting using compressed air.
  4. Depending on the fuel line size and ability to access the fitting, choose the appropriate tool: CH-41769: fuel line disconnect tool set or CH-44581: fuel line disconnect tool. Insert the CH-41769: fuel line disconnect tool set or CH-44581: fuel line disconnect tool into the female connector, then push inward to release the locking tabs.
  5. Pull the connection apart.
  6. Using a clean shop towel, wipe off the male pipe end.
  7. Inspect both ends of the fitting for dirt and burrs.
  8. Clean or replace the components as required.
  1. Apply a few drops of clean engine oil to the male pipe end.
  2. Push both sides of the quick-connect fitting together to cause the retaining tabs to snap into place.
  3. Pull on both sides of the quick-connect fitting to make sure the connection is secure.
  4. Install the retainer to the quick-connect fitting.
  5. Inspect for leaks using the following procedure: 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 for 2 seconds. Turn the ignition OFF. Inspect for leaks.
  1. Relieve the fuel system pressure before servicing any fuel system connection. Refer to the «Fuel Pressure Relief»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions__fuel-pressure-relief) .
  2. Using compressed air, blow any dirt out of the quick-connect fitting.
  3. This step applies to Bartholomew style connectors ONLY. Squeeze the plastic quick-connect fitting release tabs.
  4. This step applies to Q Release style connectors ONLY. Release the fitting by Pushing the tab toward the other side of the slot in the fitting.
  5. This step applies to Squeeze to Release style connectors ONLY. Squeeze where indicated by arrows on both sides of the plastic ring surrounding the quick-connect fitting.
  6. This step applies to Squeeze to Release style connectors ONLY. Push in the male side slightly in order to slide the retainer away from the retainers, squeeze where indicated by arrows on both sides of the plastic ring surrounding the quick-connect fitting.
  7. This step applies to Sliding Retainer style connectors ONLY. Release the fitting by pressing on one side of the release tab causing it to push in slightly. If the tab doesn't move try pressing the tab in from the opposite side. The tab will only move in one direction.
  8. This step applies to the Global Connector style only. Push the connector toward the tube in order to release the pressure. Press and hold down the release mechanism, and pull the connector straight out.
  9. This step applies to the TI Loc style only. Push the connector toward the tube in order to release the pressure. Release the redundant latch (1) with two fingers or a flat bladed tool. Then press and hold down the bottom release mechanism (2) and pull the connector straight out.
  10. This step applies to the Safe Lock style only. Push the connector toward the tube in order to release the pressure. Release the second latch (1) with two fingers. Then press and hold down the bottom release mechanism (2) and pull the connector straight out.
  11. Using a clean shop towel, wipe off the male pipe end.
  12. Inspect both ends of the fitting for dirt and burrs.
  13. Clean or replace components as necessary.
  1. Apply a few drops of clean engine oil to the male pipe end.
  2. Push both sides of the quick-connect fitting together in order to cause the retaining feature to snap into place.
  3. Pull on both sides of the quick-connect fitting to make sure the connection is secure.
  4. Insert the tube in the connector until the retainer snaps in place.
  5. Push down on the redundant latch (1) until it is fully engaged and snapped into position.
  6. Insert the tube in the connector until the retainer snaps in place.
  7. Push down on the second latch (1) in order to secure the connection.
  8. Inspect for leaks using the following procedure: 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 for 2 seconds. Turn the ignition OFF. Inspect for leaks.

Scheme 17

Scheme 17: Fuel Filter Replacement (China)
Scheme 17: Fuel Filter Replacement (China)
CalloutComponent Name
Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Disconnect the fuel lines. Refer to Plastic Collar Quick Connect Fitting Service .
1Fuel Filter Fastener CAUTION: Refer to Fastener Caution . Tighten: 9 N.m (80 lb in)
2Fuel Filter
CAUTION
Refer to Fastener Caution .

CH-45004: Fuel Tank Drain Hose

For equivalent regional tools, refer to Special Tools .

WARNINGNever drain or store fuel in an open container. Always use an approved fuel storage container in order to reduce the chance of fire or explosion.
WARNINGPlace a dry chemical (Class B) fire extinguisher nearby before performing any on-vehicle service procedures. Failure to follow these precautions may result in personal injury.

Fuel Tank Draining Procedure

  1. Remove the fuel fill cap.
  2. Raise and suitably support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/srx/ii-2009-2012/remont/hoistjack/#general-information) .
  3. Loosen the fuel fill pipe hose clamps and slide the fill pipe hose up the filler pipe.
  4. Insert the CH-45004: fuel tank drain hose into the fuel tank until the hose reaches the bottom of the fuel tank.
  5. Use an hand or air operated pump device in order to drain as much fuel as possible.
  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions__fuel-pressure-relief) .
  2. Drain the fuel tank. Refer to «Fuel Tank Draining»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  3. Remove the exhaust system. Refer to «Exhaust Muffler Replacement (LF1)»(/cadillac/srx/ii-2009-2012/remont/exhaust/#engine-exhaust-system) or «Exhaust Muffler Replacement (LAU)»(/cadillac/srx/ii-2009-2012/remont/exhaust/#engine-exhaust-system) .
  4. If required, remove the propeller shaft. Refer to «Propeller Shaft Replacement»(/cadillac/srx/ii-2009-2012/remont/driveshaft-universal-joints/#propeller-shaft) .
  5. Disconnect the evaporative emission line (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  6. Loosen the upper fill pipe clamp and hose clamp (2) and slide the hose up the filler pipe.
  7. Disconnect the fuel tank electrical connector (1).
  8. Disconnect the fuel line and evaporative emission line connectors (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  9. Disconnect the evaporative emission line (1) from the canister.
  10. Support the fuel tank with a suitable jack.
  11. Remove the fuel tank strap bolts (1) and reposition the straps (2) downward toward the front of the vehicle.
  12. Using a suitable jack, lower the fuel tank (3).
  13. Remove the following components if replacing just the fuel tank: The primary fuel tank module-Refer to «Primary Fuel Tank Module Replacement (NT7, NU5)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Primary Fuel Tank Module Replacement (NA3, NE9, NF9)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) . The secondary fuel tank module-Refer to «Secondary Fuel Tank Module Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  1. Install the following components if fuel tank replacement was necessary: The primary fuel tank module-Refer to «Primary Fuel Tank Module Replacement (NT7, NU5)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Primary Fuel Tank Module Replacement (NA3, NE9, NF9)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Primary Fuel Tank Module Replacement (China)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) . The secondary fuel tank module-Refer to «Secondary Fuel Tank Module Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Raise the fuel tank (3) to the vehicle.
  3. Ensure the fuel tank straps are seated properly. Install the fuel tank straps (2) and bolts (1) then tighten to 45 N.m (33 lb ft).
  4. Connect the evaporative emission line (1) to the canister.
  5. Connect the fuel tank electrical connector (1).
  6. Connect the fuel line and evaporative emission line connectors (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  7. Connect the evaporative emission line (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  8. Install the filler tube and tighten the hose both clamp (2) to 5 N.m (44 lb in).
  9. Perform a leak down test. Refer to «Evaporative Emission System Diagnosis»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-symptom-troubleshooting-and-diagnosis) .
  10. If required, install the propeller shaft. Refer to «Propeller Shaft Replacement»(/cadillac/srx/ii-2009-2012/remont/driveshaft-universal-joints/#propeller-shaft) .
  11. Install the exhaust system. Refer to «Exhaust Muffler Replacement (LF1)»(/cadillac/srx/ii-2009-2012/remont/exhaust/#engine-exhaust-system) or «Exhaust Muffler Replacement (LAU)»(/cadillac/srx/ii-2009-2012/remont/exhaust/#engine-exhaust-system) .
  12. Refill the fuel tank.
  13. Inspect for fuel leaks.

Scheme 18

Scheme 18: Fuel Pump Flow Control Module Replacement
Scheme 18: Fuel Pump Flow Control Module Replacement
CalloutComponent Name
1Fuel Pump Flow Control Module Fastener CAUTION: Refer to Fastener Caution Tighten: 8 N.m (71 lb in)
2Fuel Pump Flow Control Module Procedure Remove the left body side trim panel. Refer to Body Side Trim Panel Replacement . Disconnect the electrical connector. If replacing, reprogram the module. Refer to Control Module References
CAUTION
Refer to Fastener Caution

Scheme 19

Scheme 19: Fuel Tank Pressure Sensor Replacement
Scheme 19: Fuel Tank Pressure Sensor Replacement
CalloutComponent Name
Preliminary Procedure: Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Fuel Tank Pressure Sensor Procedure: Disconnect the electrical connector.
  1. Drain the fuel tank if necessary. Refer to «Fuel Tank Draining»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions)
  2. Remove the housing fasteners (1).
  3. Remove the right rear wheelhouse panel liner. Refer to «Rear Wheelhouse Panel Liner Replacement»(/cadillac/srx/ii-2009-2012/remont/frames-subframes-crossmembers/#frame-and-underbody) .
  4. Disconnect the evaporative emission line (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Remove the lower filler tube fastener (3).
  6. Loosen the filler pipe hose clamp (2) and disconnect the hose.
  7. Remove the upper filler tube fastener (3).
  8. Remove the filler pipe (4).
  1. Position the filler pipe (4) in place and hand tighten the center nut (3).
  2. Install the filler pipe hose and tighten the clamp (2) to 5 N.m (44 lb in).
  3. Start and hand tighten the lower filler pipe fastener (3).
  4. Connect the evaporative emission line (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Tighten the fasteners (3) to 10 N.m (89 lb in).
  6. Install the housing fasteners (1) and tighten to 10 N.m (89 lb in).
  7. Install the right rear wheelhouse panel liner. Refer to «Rear Wheelhouse Panel Liner Replacement»(/cadillac/srx/ii-2009-2012/remont/frames-subframes-crossmembers/#frame-and-underbody) .

CH 45722: Fuel Tank Sender Wrench

For equivalent regional tools, refer to Special Tools

  1. Remove the fuel tank. Refer to «Fuel Tank Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Disconnect the electrical connectors (1) from the primary and secondary fuel tank modules.
  3. Disconnect the fuel and evaporative emission lines (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  4. Remove the secondary fuel pump module. Refer to «Secondary Fuel Tank Module Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Using the CH 45722: wrench, remove the cam lock ring (1) by turning counterclockwise.
  6. Remove the primary fuel tank module (1) and the O-ring (2).
  7. If replacing the fuel pump module only, remove the primary fuel level sensor. Refer to «Primary Fuel Level Sensor Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  1. If replacing the fuel pump module only, install the primary fuel level sensor. Refer to «Primary Fuel Level Sensor Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Install a NEW O-ring (2) and the primary fuel tank module (1).
  3. Using the CH 45722: wrench, install the cam lock ring (1) by turning clockwise.
  4. Install the secondary fuel pump module. Refer to «Secondary Fuel Tank Module Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Connect the electrical connectors (1) to the primary and secondary fuel tank modules.
  6. Connect the fuel and evaporative emission lines (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  7. Install the fuel tank. Refer to «Fuel Tank Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .

CH 45722: Fuel Tank Sender Wrench

For equivalent regional tools, refer to Special Tools

  1. Remove the fuel tank. Refer to «Fuel Tank Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Disconnect the electrical connectors (1) from the primary and secondary fuel tank modules.
  3. Disconnect the fuel and evaporative emission lines (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  4. Remove the secondary fuel pump module. Refer to «Secondary Fuel Tank Module Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Using the CH 45722: wrench, remove the cam lock ring (1) by turning counterclockwise.
  6. Remove the primary fuel tank module (1) and the O-ring (2).
  7. If replacing the fuel pump module only, remove the primary fuel level sensor. Refer to «Primary Fuel Level Sensor Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  1. If replacing the fuel pump module only, install the primary fuel level sensor. Refer to «Primary Fuel Level Sensor Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Install a NEW O-ring (2) and the primary fuel tank module (1).
  3. Using the CH 45722: wrench, install the cam lock ring (1) by turning clockwise.
  4. Install the secondary fuel pump module. Refer to «Secondary Fuel Tank Module Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Connect the electrical connectors (1) to the primary and secondary fuel tank modules.
  6. Connect the fuel and evaporative emission lines (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  7. Install the fuel tank. Refer to «Fuel Tank Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .

CH 45722: Fuel Tank Sender Wrench

For equivalent regional tools, refer to Special Tools

  1. Remove the fuel tank. Refer to «Fuel Tank Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Disconnect the electrical connectors (1) from the primary and secondary fuel tank modules.
  3. Disconnect the fuel and evaporative emission lines (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  4. Remove the secondary fuel pump module. Refer to «Secondary Fuel Tank Module Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Using the CH 45722: wrench, remove the cam lock ring (1) by turning counterclockwise.
  6. Remove the primary fuel tank module (1) and the O-ring (2).
  7. If replacing the fuel pump module only, remove the primary fuel level sensor. Refer to «Primary Fuel Level Sensor Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  1. If replacing the fuel pump module only, install the primary fuel level sensor. Refer to «Primary Fuel Level Sensor Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Install a NEW O-ring (2) and the primary fuel tank module (1).
  3. Using the CH 45722: wrench, install the cam lock ring (1) by turning clockwise.
  4. Install the secondary fuel pump module. Refer to «Secondary Fuel Tank Module Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Connect the electrical connectors (1) to the primary and secondary fuel tank modules.
  6. Connect the fuel and evaporative emission lines (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  7. Install the fuel tank. Refer to «Fuel Tank Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .

CH 48482: Fuel Tank Sender Wrench

For equivalent regional tools, refer to Special Tools .

  1. Remove the fuel tank. Refer to «Fuel Tank Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Disconnect the electrical connector (1).
  3. Disconnect the evaporative emission line (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  4. Using the CH 48482: wrench, remove the cam lock ring (1) by turning counterclockwise.
  5. Partially raise the secondary fuel pump module and disconnect the crossover tube (1) by pulling back the plastic retaining tab (2).
  6. Disconnect the evaporative emission line (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  7. Remove the secondary fuel tank module (1) and the O-ring (2).
  1. Install a NEW O-ring (2) and the primary fuel tank module (1).
  2. Partially install the secondary fuel pump module and connect the crossover tube (1).
  3. Connect the evaporative emission line (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  4. Using the CH 48482: wrench, install the cam lock ring (1) by turning clockwise.
  5. Connect the electrical connector (1).
  6. Connect the evaporative emission line (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  7. Install the fuel tank. Refer to «Fuel Tank Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
WARNINGFuel Vapors can collect while servicing fuel system parts in enclosed areas such as a trunk. To reduce the risk of fire and increased exposure to vapors: Use forced air ventilation such as a fan set outside of the trunk. Plug or cap any fuel system openings in order to reduce fuel vapor formation. Clean up any spilled fuel immediately. Avoid sparks and any source of ignition. Use signs to alert others in the work area that fuel system work is in process.
  1. Remove the primary fuel tank module. Refer to «Primary Fuel Tank Module Replacement (NT7, NU5)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Primary Fuel Tank Module Replacement (NA3, NE9, NF9)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Primary Fuel Tank Module Replacement (China)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Using two flat-bladed tools, carefully pull both locking tabs (1) outward while simultaneously lifting the level sensor.
  3. Using a small bladed tool, push in the electrical terminals (1) while simultaneously pulling out.
  1. Push in the electrical terminals (1) and ensure the terminals are secure.
  2. Carefully insert the level sensor until the locking tabs (1) snap into the locking position.
  3. Install the primary fuel tank module. Refer to «Primary Fuel Tank Module Replacement (NT7, NU5)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Primary Fuel Tank Module Replacement (NA3, NE9, NF9)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Primary Fuel Tank Module Replacement (China)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  1. Disconnect the fuel feed line (1). Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Disengage the fuel feed line (1) from the plastic retainer (2).
  3. Remove the fuel pressure sensor. Refer to «Fuel Pressure Sensor Replacement - Fuel Feed Pipe»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  4. Disconnect the fuel feed line quick connect (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Disengage the fuel feed line (3) from the plastic retainers (2) and remove the fuel feed line.
  1. Install the fuel feed line (3) into the plastic retainers (2).
  2. Connect the fuel feed line quick connect (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  3. Install the fuel pressure sensor. Refer to «Fuel Pressure Sensor Replacement - Fuel Feed Pipe»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  4. Engage the fuel feed line (1) to the plastic retainer (2).
  5. Connect the fuel feed line (1). Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .

Scheme 20

Scheme 20: Fuel Pressure Sensor Replacement - Fuel Feed Pipe
Scheme 20: Fuel Pressure Sensor Replacement - Fuel Feed Pipe
CalloutComponent Name
Preliminary Procedures Relieve the fuel system pressure. Refer to Fuel Pressure Relief . Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Fuel Pressure Sensor CAUTION: Refer to Fastener Caution . Procedure Use a NEW O-ring. Disconnect the electrical connector. Tighten: 9 N.m (80 lb in)
CAUTION
Refer to Fastener Caution .

Scheme 21

Scheme 21: Fuel Feed Pipe Replacement
Scheme 21: Fuel Feed Pipe Replacement
CalloutComponent Name
Preliminary Procedure Relieve the fuel system pressure. Refer to Fuel Pressure Relief Remove the Intake manifold cover. Refer to Intake Manifold Cover Replacement Remove the fuel pipe shield. Refer to Fuel Pipe Shield Replacement .
1Fitting (Qty: 1) CAUTION: Refer to Fastener Caution . Tighten: 28 N.m (20 lb ft)
2Bolt (Qty: 2) Tighten: 50 N.m (28 lb ft)
3Fuel Feed Pipe Procedure Discard the pipe when removed and install a new pipe. Ensure that the high pressure fuel pipe, and fuel pump fittings are clean and dry prior to assembly. Pressure up the fuel system and check for leaks.
CAUTION
Refer to Fastener Caution .

Fuel System Cleaning

The following procedure covers the disassembly and the inspection of the complete fuel supply system. If the fuel system is contaminated, the fuel system can be cleaned. You can usually determine the extent of the fuel system contamination during the disassembly.

System Cleaning Procedure

  1. If required, remove the fuel filter. Refer to «Fuel Filter Replacement (China)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Inspect the fuel system for contamination of the in-line fuel filter. Replace the filter after cleaning the fuel lines if the filter is plugged or contaminated.
  3. Remove the fuel module assemblies. Refer to «Primary Fuel Tank Module Replacement (NT7, NU5)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Primary Fuel Tank Module Replacement (NA3, NE9, NF9)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) and «Secondary Fuel Tank Module Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  4. Locate the tank in a suitable work area away from any heat, any flame, or any other source of ignition.
  5. Perform the following procedures: Inspect the fuel sender strainer. Replace the primary fuel tank module if the strainer is contaminated. Inspect the secondary fuel tank module for debris. Clean the secondary fuel tank module if debris is found. WARNING: Wear safety glasses when using compressed air, as flying dirt particles may cause eye injury. Use compressed air in order to apply air pressure to the transfer tube.
  6. Flush the fuel tank with running hot water for at least five minutes. Pour the water out of the fuel sender assembly opening. Rock the tank in order to ensure that the removal of the water from the tank is complete.
  7. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) in order to disconnect the following quick connect fittings from the fuel rail: The feed hose/pipe The return hose/pipe
  8. Use compressed air in order to apply air pressure to the fuel lines in the opposite direction from the normal fuel flow.
  9. Remove the fuel injectors and fuel rail. Refer to «Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) and «Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  10. Clean and inspect the fuel injectors and fuel rail.

Assemble the fuel system as follows

  1. Install the fuel injectors and fuel rail. Refer to Refer to «Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) and «Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Install the fuel module assemblies. Refer to «Primary Fuel Tank Module Replacement (NT7, NU5)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Primary Fuel Tank Module Replacement (NA3, NE9, NF9)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) and «Secondary Fuel Tank Module Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  3. If required, install the fuel filter. Refer to «Fuel Filter Replacement (China)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  4. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) in order to connect the following quick connect fittings to the fuel rail: The feed hose/pipe The return hose/pipe

Scheme 22

Scheme 22: Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail
Scheme 22: Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail
CalloutComponent Name
Preliminary Procedure: Remove the fuel pipe shield. Refer to Fuel Pipe Shield Replacement .
1Fuel Injection Fuel Rail Fuel Pressure Sensor CAUTION: Refer to Fastener Caution . Tighten: 33 N.m (25 lb ft)
CAUTION
Refer to Fastener Caution .

Scheme 23

Scheme 23: Fuel Pressure Sensor Replacement (NT7, NU5)
Scheme 23: Fuel Pressure Sensor Replacement (NT7, NU5)
CalloutComponent Name
Preliminary Procedure: Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Fuel Pressure Sensor Procedure: Disconnect the electrical connector.

EN-49248: Injector Rail Assembly Remover

For equivalent regional tools, refer to Special Tools .

  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions__fuel-pressure-relief) .
  2. Remove the fuel pipe shield. Refer to «Fuel Pipe Shield Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  3. Remove the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-1-of-2) .
  4. Remove the fuel feed intermediate pipe. Refer to «Fuel Feed Intermediate Pipe Replacement (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Remove the cylinder head. Refer to «Cylinder Head Replacement - Left Side (LF1)»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-2-of-2) or «Cylinder Head Replacement - Left Side (LAU)»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-2-of-2) .
  6. Remove the foam insulator from the fuel rails.
  7. Disconnect the fuel pressure sensor electrical connector and cut the wire harness tie straps.
  8. Remove the fuel rail bolts (1).
  9. Remove the fuel rail and injectors (1) as an assembly using the EN-49248: remover.
  10. Remove the fuel pressure sensor. Refer to «Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  11. Remove and discard the direct fuel injector hold down clamps.
  12. Once the fuel rail is removed, remove the fuel injectors and rebuild them. Refer to «Fuel Rail and Injectors Cleaning and Inspection (LF1 or LFW)»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-off-vehicle-2-of-5) or «Fuel Rail and Injectors Cleaning and Inspection (LAU or LBW)»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-off-vehicle-2-of-5) .
  1. Install the fuel rail with injectors (2) into the cylinder head evenly.
  2. Install NEW direct injector hold down clamps to the injector.
  3. Hand tighten the two outer fuel rail bolts to seat the injector in the injector bores.
  4. Start and hand tighten the remaining fuel rail bolts and tighten the fuel rail bolts (1).
  5. Tighten the fuel rail bolts in the sequence shown: Tighten the Bank 1 fuel rail bolts first pass to 12 N.m (106 lb in). Tighten the Bank 1 fuel rail bolts final pass to 23 N.m (17 lb ft).
  6. Install the fuel feed intermediate pipe. Refer to «Fuel Feed Intermediate Pipe Replacement (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  7. Install the high pressure fuel sensor. Refer to «Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  8. Connect the fuel injector wiring harness electrical connector to the fuel injectors, fuel rail and fuel pressure sensor.
  9. Inspect for fuel leaks using the following procedure: Turn ON the ignition, with the engine OFF for 2 seconds. Turn OFF the ignition, for 10 seconds. Turn ON the ignition, with the engine OFF. Inspect for fuel leaks.
  10. Install the foam insulator to the fuel rails.
  11. Install the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-1-of-2) .
  12. Install the fuel pipe shield. Refer to «Fuel Pipe Shield Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  13. Install the cylinder head. Refer to «Cylinder Head Replacement - Left Side (LF1)»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-2-of-2) or «Cylinder Head Replacement - Left Side (LAU)»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-2-of-2) .
  14. Install the low side fuel pressure service port cap.
  15. Install the fuel tank cap.

EN-49248: Injector Rail Assembly Remover

For equivalent regional tools, refer to Special Tools

  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions__fuel-pressure-relief) .
  2. Remove the fuel pipe shield. Refer to «Fuel Pipe Shield Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  3. Remove the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-1-of-2) .
  4. Remove the fuel feed intermediate pipe. Refer to «Fuel Feed Intermediate Pipe Replacement (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Remove the cylinder head. Refer to «Cylinder Head Replacement - Left Side (LF1)»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-2-of-2) or «Cylinder Head Replacement - Left Side (LAU)»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-2-of-2) .
  6. Remove the fuel rail bolts (1).
  7. Remove the fuel rail and injectors (1) as an assembly using the EN-49248: remover.
  8. Remove and discard the direct fuel injector hold down clamps.
  9. Once the fuel rail is removed, remove the fuel injectors and rebuild them. Refer to «Fuel Rail and Injectors Cleaning and Inspection (LF1 or LFW)»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-off-vehicle-2-of-5) or «Fuel Rail and Injectors Cleaning and Inspection (LAU or LBW)»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-off-vehicle-2-of-5) .
  1. Install the fuel rail with injectors (2) into the cylinder head evenly.
  2. Hand tighten the two outer fuel rail bolts to seat the injector in the injector bores.
  3. Start and hand tighten the remaining fuel rail bolts (1).
  4. Tighten the fuel rail bolts in the sequence shown: Tighten the Bank 1 fuel rail bolts first pass to 12 N.m (106 lb in). Tighten the Bank 1 fuel rail bolts a final pass to 23 N.m (17 lb ft).
  5. Install the fuel feed intermediate pipe. Refer to «Fuel Feed Intermediate Pipe Replacement (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  6. Connect the fuel injector wiring harness electrical connector from the fuel injectors, fuel rail and fuel pressure sensor.
  7. Inspect for fuel leaks using the following procedure: Turn ON the ignition, with the engine OFF for 2 seconds. Turn OFF the ignition, for 10 seconds. Turn ON the ignition, with the engine OFF. Inspect for fuel leaks.
  8. Install the foam insulator to the fuel rails.
  9. Install the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-1-of-2) .
  10. Install the fuel pipe shield. Refer to «Fuel Pipe Shield Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  11. Install the cylinder head. Refer to «Cylinder Head Replacement - Left Side (LF1)»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-2-of-2) or «Cylinder Head Replacement - Left Side (LAU)»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-2-of-2) .
  12. Install the low side fuel pressure service port cap.
  13. Install the fuel tank cap.

Scheme 24

Scheme 24: Fuel Feed Intermediate Pipe Replacement (LF1)
Scheme 24: Fuel Feed Intermediate Pipe Replacement (LF1)
CalloutComponent Name
Preliminary Procedures Relieve the fuel system pressure. Refer to Fuel Pressure Relief . Remove the Intake manifold cover. Refer to Intake Manifold Cover Replacement . Remove the fuel pipe shield. Refer to Fuel Pipe Shield Replacement .
1Fitting (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten: Tighten the fittings in sequence as numbered: 1, 2, 3 First Pass 15 N.m (11 lb ft) Second Pass 30 N.m (22 lb ft)
2Fuel Feed Intermediate Pipe Procedure Discard the pipe when removed and install a NEW pipe. Lubricate the pipes with silicon free engine oil. Refer to Adhesives, Fluids, Lubricants, and Sealers . Pressure up the fuel system and check for leaks.
CAUTION
Refer to Fastener Caution .

Scheme 25

Scheme 25: Fuel Pipe Shield Replacement
Scheme 25: Fuel Pipe Shield Replacement
CalloutComponent Name
Preliminary Procedure: Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
1Fuel Pipe Shield Fastener CAUTION: Refer to Fastener Caution . Tighten: 9 N.m (80 lb in)
2Fuel Pipe Shield Push-Pin
3Fuel Pipe Shield
CAUTION
Refer to Fastener Caution .

EN-48896: High Pressure Fuel Pump Installation Alignment Gauge

For equivalent regional tools, refer to Special Tools

  1. Relieve the low and high side fuel system pressure. Refer to «Fuel Pressure Relief»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions__fuel-pressure-relief) .
  2. Remove the high pressure fuel pump shield. Refer to «Fuel Pipe Shield Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  3. Disconnect the engine wiring harness electrical connector from the high pressure fuel pump.
  4. Remove the low pressure feed pipe. Refer to «Fuel Feed Pipe Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Remove the high pressure pipe. Discard the pipe. Refer to «Fuel Feed Intermediate Pipe Replacement (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  6. Remove and discard the high pressure fuel pump bolts (1).
  7. Remove the high pressure fuel pump (2).
  8. Remove and discard the high pressure fuel pump O-ring (3).
  9. Remove and discard the high pressure fuel pump gasket (4).
  10. Remove the high pressure fuel pump roller lifter (5).
  1. Use the EN-48896: alignment gauge to ensure that the camshaft lobe is in the base circle position. At base circle the tool will be flush with the head.
  2. Lubricate the high pressure fuel pump cylinder head bore and roller lifter with camshaft prelube. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-specifications__adhesives-fluids-lubricants-and-sealers) .
  3. Install the high pressure fuel pump roller lifter (5).
  4. Install a NEW high pressure fuel pump O-ring (3).
  5. Position the NEW high pressure fuel pump gasket (4) and bolts (1) to the fuel pump.
  6. Install the high pressure fuel pump (2). Force will be required while hand tightening the bolts.
  7. Tighten the high pressure fuel pump retaining bolts to 15 N.m (11 lb ft).
  8. Ensure the high pressure fuel pump and fuel rail fittings are clean prior to assembly.
  9. Install a NEW high pressure fuel pipe. Refer to «Fuel Feed Intermediate Pipe Replacement (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  10. Install the fuel feed pipe to the high pressure fuel pump. Refer to «Fuel Feed Pipe Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  11. Connect the high pressure fuel pump wiring harness.
  12. Install the fuel tank cap.
  13. Inspect for leaks using the following procedure: Turn ON the ignition, with the engine OFF for 2 seconds. Turn OFF the ignition, for 10 seconds. Turn ON the ignition, with the engine OFF. Inspect for fuel leaks.
  14. Install the pressure relief cap to the fuel feed pipe.
  15. Install the intake manifold. Refer to «Intake Manifold Replacement»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-1-of-2) .
  16. Install the high pressure fuel pump shield. Refer to «Fuel Pipe Shield Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions__fuel-pressure-relief) .
  2. Remove the upper intake manifold with the lower intake manifold. Refer to «Upper Intake Manifold Replacement»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-1-of-2) .
  3. Remove the fuel pipe retaining clip.
  4. Disconnect the fuel feed pipe (2) from the fuel injector rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  5. Use compressed air in order to remove debris from the area where the fuel injectors enter the intake manifold.
  6. Remove the fuel rail bolts.
  7. Remove the fuel rail with the fuel injectors.
  8. Disengage the fuel injector electrical connector lock.
  9. Disconnect the fuel injector electrical connector.
  10. Remove the fuel injector retainer clip.
  11. Remove the fuel injector.
  12. Remove and discard the fuel injector seals.
  1. Install NEW fuel injector seals.
  2. Install the fuel injector.
  3. Install the fuel injector retainer clip.
  4. Install the fuel injector electrical connector.
  5. Engage the fuel injector electrical connector lock.
  6. Install the fuel rail with the fuel injectors.
  7. Install the fuel rail bolts. Tighten: Tighten the fuel rail bolts to 10 N.m (89 lb in).
  8. Connect the fuel feed pipe (2) to the fuel rail. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  9. Install the fuel pipe retaining clip.
  10. Install the upper intake manifold. Refer to «Upper Intake Manifold Replacement»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-1-of-2) .

Scheme 26

Scheme 26: Evaporative Emission Canister Purge Solenoid Valve Replacement (LF1)
Scheme 26: Evaporative Emission Canister Purge Solenoid Valve Replacement (LF1)
CalloutComponent Name
Preliminary Procedure: Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
1Bolt CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Evaporative Emission Canister Purge Solenoid Valve Procedure Disconnect the EVAP canister purge solenoid harness connector. Install a NEW O-ring.
CAUTION
Refer to Fastener Caution .

Scheme 27

Scheme 27: Evaporative Emission Canister Purge Solenoid Valve Replacement (LAU)
Scheme 27: Evaporative Emission Canister Purge Solenoid Valve Replacement (LAU)
CalloutComponent Name
Preliminary Procedure Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement . Disconnect the quick connects. Refer to Plastic Collar Quick Connect Fitting Service
1Evaporative Emission Canister Purge Solenoid Fastener CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Evaporative Emission Canister Purge Solenoid Valve Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 28

Scheme 28: Evaporative Emission Canister Vent Solenoid Valve Replacement (NT7, NU5)
Scheme 28: Evaporative Emission Canister Vent Solenoid Valve Replacement (NT7, NU5)
CalloutComponent Name
Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Disconnect the evaporative emission line. Refer to Plastic Collar Quick Connect Fitting Service .
1Evaporative Emission Vent Solenoid Valve Procedure Pull back the plastic locking tab and rotate the entire valve counterclockwise. Disconnect the electrical connector.
  1. Disconnect the evaporative emission line (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Disengage the evaporative emission line (1) from the plastic retainer (2).
  3. Disconnect the evaporative emission line (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  4. Disengage the evaporative emission line (1) from the plastic retainers (2) and remove the evaporative emission line.
  1. Install the evaporative emission line (1) into the plastic retainers (2).
  2. Connect the evaporative emission line (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  3. Engage the evaporative emission line (1) to the plastic retainer (2).
  4. Connect the evaporative emission line (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .

Scheme 29

Scheme 29: Evaporative Emission Rear Pipe Replacement
Scheme 29: Evaporative Emission Rear Pipe Replacement
CalloutComponent Name
Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Disconnect the evaporative emission lines. Refer to Plastic Collar Quick Connect Fitting Service .
1Evaporative Emission Rear Pipe Procedure: Disengage the evaporative emission line from the plastic retaining clips.

Scheme 30

Scheme 30: Evaporative Emission Canister Purge Tube Replacement (LF1)
Scheme 30: Evaporative Emission Canister Purge Tube Replacement (LF1)
CalloutComponent Name
Preliminary Procedure Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement . Disconnect the evaporative emission lines. Refer to Plastic Collar Quick Connect Fitting Service .
1Evaporative Emission Front Pipe

Scheme 31

Scheme 31: Evaporative Emission Canister Purge Tube Replacement (LAU)
Scheme 31: Evaporative Emission Canister Purge Tube Replacement (LAU)
CalloutComponent Name
Preliminary Procedure Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement . Disconnect the quick connects. Refer to Plastic Collar Quick Connect Fitting Service
1Evaporative Emission Canister Purge Solenoid Fastener CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Evaporative Emission Purge Tube
CAUTION
Refer to Fastener Caution .

Scheme 32

Scheme 32: Evaporative Emission Canister Air Inlet Hose Replacement
Scheme 32: Evaporative Emission Canister Air Inlet Hose Replacement
CalloutComponent Name
Preliminary Procedures Remove the left rear wheelhouse liner. Refer to Rear Wheelhouse Panel Liner Replacement . Disconnect the evaporative emission line. Refer to Plastic Collar Quick Connect Fitting Service .
1Evaporative Emission Canister Air Inlet Hose Procedure: Disengage the line from the plastic retainers.

Scheme 33

Scheme 33: Evaporative Emission Canister Replacement (NT7, NU5)
Scheme 33: Evaporative Emission Canister Replacement (NT7, NU5)
CalloutComponent Name
Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Disconnect the evaporative emission lines. Refer to Plastic Collar Quick Connect Fitting Service .
1Evaporative Emission Canister Fasteners (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten: 9 N.m (80 lb in)
2Evaporative Emission Canister Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

GE 41413-200: Evaporative Pressure and Purge Station

For equivalent regional tools, refer to Special Tools .

Inspection Procedure

CAUTIONUse the EVAP Pressure/Purge Diagnostic Station J 41413 in order to provide a clean, dry, low pressure gas source. Do not substitute any other pressurized gas source. Damage may result to the EVAP system.
  1. Turn OFF the ignition.
  2. Remove the EVAP canister purge valve. Refer to «Evaporative Emission Canister Purge Solenoid Valve Replacement (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Evaporative Emission Canister Purge Solenoid Valve Replacement (LAU)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  3. Lightly tap the EVAP canister purge valve on a hard surface.
  4. Inspect for carbon particles exiting either of the vacuum ports. If no carbon particles were detected, but a blockage was detected during a diagnostic procedure, install the original EVAP canister purge valve. Continue with the cleaning procedure. If carbon particles are found during the inspection procedure, continue with the cleaning procedure. If a diagnostic procedure directed you to replace the EVAP canister purge valve and no carbon particles were detected, replace the EVAP canister purge valve. Return to the published service procedure.

Cleaning Procedure

  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/srx/ii-2009-2012/remont/hoistjack/#general-information) .
  2. Remove the EVAP canister. Refer to «Evaporative Emission Canister Replacement (NT7, NU5)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  3. Turn OFF the main valve on the GE 41413-200: station.
  4. Disconnect the hose from the diagnostic station pressure regulator.
  5. Using a section of vacuum hose, connect one end onto the EVAP pressure/purge diagnostic station pressure regulator.
  6. Connect the other end of the vacuum hose to the canister side of the purge pipe.
  7. Turn ON the main nitrogen cylinder valve and continue to discharge nitrogen for 15 seconds.
  8. If the nitrogen does not clear the blockage, replace the purge pipe.
  9. Return the EVAP pressure/purge diagnostic station to the stations original condition.
  10. Install a new EVAP canister. Refer to «Evaporative Emission Canister Replacement (NT7, NU5)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  11. Lower the vehicle.
  12. Install a new EVAP canister purge valve. Refer to «Evaporative Emission Canister Purge Solenoid Valve Replacement (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) or «Evaporative Emission Canister Purge Solenoid Valve Replacement (LAU)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  13. Return to the diagnostic table that sent you here.
  1. Remove the intake manifold. Refer to «Upper Intake Manifold Replacement»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-1-of-2) .
  2. Disconnect the engine wiring harness electrical connector(s) (1) from the ignition coil(s) (4).
  3. Remove the ignition coil bolt(s).
  4. Remove the ignition coil(s).
  1. Install the ignition coil(s).
  2. Install the ignition coil bolt(s). Tighten: Tighten the bolt(s) to 10 N.m (89 lb in).
  3. Connect the engine wiring harness electrical connector(s) (1) to the ignition coil(s) (4).
  4. Install the intake manifold. Refer to «Upper Intake Manifold Replacement»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-1-of-2) .
  1. Remove the intake manifold cover. Refer to «Upper Intake Manifold Replacement»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-1-of-2) .
  2. Disconnect the engine wiring harness electrical connector(s) (5) from the ignition coil(s) (4).
  3. Remove the ignition coil bolt(s).
  4. Remove the ignition coil(s).
  1. Install the ignition coil(s).
  2. Install the ignition coil bolt(s). Tighten: Tighten the bolt(s) to 10 N.m (89 lb in).
  3. Connect the engine wiring harness electrical connector(s) (5) to the ignition coil(s) (4).
  4. Install the intake manifold cover. Refer to «Upper Intake Manifold Replacement»(/cadillac/srx/ii-2009-2012/remont/mechanical/#engine-mechanical-28l-or-30l-repair-instructions-on-vehicle-1-of-2) .

Spark Plug Usage

  1. Ensure that the correct spark plug is installed. An incorrect spark plug causes driveability conditions. Refer to «Ignition System Specifications (LAU)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-specifications__ignition-system-specifications-lau) or «Ignition System Specifications (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-specifications__ignition-system-specifications-lf1) 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 - Colder plug Pre-ignition causing spark plug and/or engine damage - Hotter plug

Spark Plug Inspection

  1. 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.
  2. Inspect the insulator (2) for flashover or carbon tracking, 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 causes arcing to ground.
  3. Inspect the insulator (2) for cracks. All or part of the electrical charge may arc through the crack instead of the electrodes (3, 4).
  4. Inspect for evidence of improper arcing. Measure the gap between the center electrode (4) and the side electrode (3) terminals. Refer to «Ignition System Specifications (LAU)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-specifications__ignition-system-specifications-lau) or «Ignition System Specifications (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-specifications__ignition-system-specifications-lf1) . An excessively wide electrode gap can prevent correct spark plug operation. Inspect for the correct spark plug torque. Refer to «Ignition System Specifications (LAU)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-specifications__ignition-system-specifications-lau) or «Ignition System Specifications (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-specifications__ignition-system-specifications-lf1) . 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.
  5. 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.

Spark Plug 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 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 intensity. Most powdery deposits will not effect spark intensity unless they form into a glazing over the electrode.
  1. Remove the ignition coil(s). Refer to «Ignition Coil Replacement - Bank 1»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) and/or «Ignition Coil Replacement - Bank 2»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  2. Use compressed air in order to remove debris from the spark plug cavity.
  3. Remove the spark plug.
  1. Ensure that the spark plug gap is equivalent to the spark plug gap specification. Refer to «Ignition System Specifications (LAU)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-specifications__ignition-system-specifications-lau) or «Ignition System Specifications (LF1)»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-specifications__ignition-system-specifications-lf1) .
  2. Install the spark plug. Tighten: Tighten the spark plug to 20 N.m (15 lb ft).
  3. Install the ignition coil(s). Refer to «Ignition Coil Replacement - Bank 1»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) and/or «Ignition Coil Replacement - Bank 2»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .

Scheme 34

Scheme 34: Crankshaft Position Sensor Replacement
Scheme 34: Crankshaft Position Sensor Replacement
CalloutComponent Name
Preliminary Procedures If equipped with AWD, remove the right side catalytic converter. Refer to Catalytic Converter Replacement - Right Side (LF1) . Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Bolt CAUTION: Refer to Fastener Caution . Tighten: 9 N.m (80 lb in)
2Bolt Tighten: 58 N.m (42 lb ft)
3Exhaust Manifold Lower Heat Shield
4Bolt Tighten: 10 N.m (89 lb in)
5Crankshaft Position Sensor Procedure Disconnect the crankshaft position sensor harness connector. If LF1, perform the crankshaft position system variation learn procedure. Refer to Crankshaft Position System Variation Learn (LF1)
CAUTION
Refer to Fastener Caution .

Scheme 35

Scheme 35: Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust
Scheme 35: Camshaft Position Sensor Replacement - Bank 2 (Left Side) Exhaust
CalloutComponent Name
Preliminary Procedure: Remove the engine mount bracket. Refer to Engine Mount Bracket Replacement - Right Side .
1Camshaft Position Sensor Fastener CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Camshaft Position Sensor Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 36

Scheme 36: Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake
Scheme 36: Camshaft Position Sensor Replacement - Bank 2 (Left Side) Intake
CalloutComponent Name
Preliminary Procedure: Remove the engine mount bracket. Refer to Engine Mount Bracket Replacement - Right Side .
1Camshaft Position Sensor Fastener CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Camshaft Position Sensor Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 37

Scheme 37: Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust
Scheme 37: Camshaft Position Sensor Replacement - Bank 1 (Right Side) Exhaust
CalloutComponent Name
Preliminary Procedure: Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (LF1) or Air Cleaner Assembly Replacement (LAU) .
1Camshaft Position Sensor Fastener CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Camshaft Position Sensor Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 38

Scheme 38: Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake
Scheme 38: Camshaft Position Sensor Replacement - Bank 1 (Right Side) Intake
CalloutComponent Name
Preliminary Procedure: Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (LF1) or Air Cleaner Assembly Replacement (LAU) .
1Camshaft Position Sensor Fastener CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Camshaft Position Sensor Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 39

Scheme 39: Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake
Scheme 39: Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake
CalloutComponent Name
Preliminary Procedures: Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (LF1) or Air Cleaner Assembly Replacement (LAU) .
1Camshaft Position Actuator Solenoid Valve Fastener CAUTION: Refer to Fastener Caution . Procedure: Disconnect the electrical connector. Tighten: 10 N.m (89 lb in)
2Camshaft Position Actuator Solenoid Valve
CAUTION
Refer to Fastener Caution .

Scheme 40

Scheme 40: Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust
Scheme 40: Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust
CalloutComponent Name
Preliminary Procedures: Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (LF1) or Air Cleaner Assembly Replacement (LAU) .
1Camshaft Position Actuator Solenoid Valve Fastener CAUTION: Refer to Fastener Caution . Procedure: Disconnect the electrical connector. Tighten: 10 N.m (89 lb in)
2Camshaft Position Actuator Solenoid Valve
CAUTION
Refer to Fastener Caution .

Scheme 41

Scheme 41: Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake
Scheme 41: Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake
CalloutComponent Name
Preliminary Procedure: Remove the engine mount bracket. Refer to Engine Mount Bracket Replacement - Right Side .
1Camshaft Position Actuator Solenoid Valve Fastener CAUTION: Refer to Fastener Caution . Procedure: Disconnect the electrical connector. Tighten: 10 N.m (89 lb in)
2Camshaft Position Actuator Solenoid Valve
CAUTION
Refer to Fastener Caution .

Scheme 42

Scheme 42: Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust
Scheme 42: Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust
CalloutComponent Name
Preliminary Procedure: Remove the engine mount bracket. Refer to Engine Mount Bracket Replacement - Right Side .
1Camshaft Position Actuator Solenoid Valve Fastener CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Camshaft Position Actuator Solenoid Valve Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 43

Scheme 43: Knock Sensor Replacement - Bank 1
Scheme 43: Knock Sensor Replacement - Bank 1
CalloutComponent Name
Preliminary Procedures If equipped with AWD, remove the right side catalytic converter. Refer to Catalytic Converter Replacement - Right Side (LF1) . Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Bolt CAUTION: Refer to Fastener Caution . Tighten: 25 N.m (18 lb ft)
2Bolt Tighten: 58 N.m (42 lb ft)
3Exhaust Manifold Lower Heat Shield
4Bolt Tighten: 25 N.m (18 lb ft)
5Knock Sensor Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 44

Scheme 44: Knock Sensor Replacement - Bank 2
Scheme 44: Knock Sensor Replacement - Bank 2
CalloutComponent Name
Preliminary Procedure: Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Knock Sensor Fastener CAUTION: Refer to Fastener Caution . Tighten: 9 N.m (80 lb in)
2Knock Sensor Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 45

Scheme 45: Turbocharger Pressure Sensor Replacement
Scheme 45: Turbocharger Pressure Sensor Replacement
CalloutComponent Name
Preliminary Procedure: Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .
1Turbo Pressure Sensor Fastener CAUTION: Refer to Fastener Caution . Tighten: 4 N.m (35 lb in)
2Turbo Pressure Sensor Procedure: Disconnect the electrical connector.
CAUTION
Refer to Fastener Caution .

Scheme 46

Scheme 46: Charge Air Cooler Outlet Duct Replacement
Scheme 46: Charge Air Cooler Outlet Duct Replacement
CalloutComponent Name
Preliminary Procedures Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement (LF1) or Air Cleaner Outlet Duct Replacement (LAU) . Remove the turbo charger pressure sensor. Refer to Turbocharger Pressure Sensor Replacement .
1Charge Air Cooler Outlet Duct Fastener (Qty: 2) CAUTION: Refer to Fastener Caution Tighten: 10 N.m (89 lb in)
2Charge Air Cooler Outlet Duct Clamp Tighten: 4 N.m (35 lb in)
3Charge Air Cooler Outlet Duct Spring Clamp
4Charge Air Cooler Outlet Duct
CAUTION
Refer to Fastener Caution

Scheme 47

Scheme 47: Charge Air Cooler Inlet Duct Replacement
Scheme 47: Charge Air Cooler Inlet Duct Replacement
CalloutComponent Name
Preliminary Procedure: Remove the left front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement .
1Charge Air Cooler Inlet Duct Clamp CAUTION: Refer to Fastener Caution Tighten: 4 N.m (35 lb in)
2Charge Air Cooler Inlet Duct Spring Clamp
3Charge Air Cooler Inlet Duct
CAUTION
Refer to Fastener Caution
  1. Remove the three-way catalytic converter. Refer to «Three-Way Catalytic Converter Replacement (Service)»(/cadillac/srx/ii-2009-2012/remont/exhaust/#engine-exhaust-system) .
  2. Remove the secondary air injection pump pipe. Refer to «Secondary Air Injection Pump Pipe Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .
  3. Remove the check valve pipe fasteners (1) and (2).
  4. Remove the check valve bracket fasteners (1) and (2).
  5. Remove the check valve (1) and gasket (2).
  1. Install the check valve (1) and gasket (2).
  2. Install the check valve bracket fastener (1) and tighten to 9 N.m (80 lb in).
  3. Install the check valve bracket fastener (2) and tighten to 58 N.m (43 lb ft).
  4. Install the check valve pipe fasteners (1) and (2).
  5. Tighten the check valve pipe fastener (1) to 23 N.m (17 lb ft).
  6. Tighten the check valve pipe fastener (2) to 9 N.m (80 lb in).
  7. Install the three-way catalytic converter. Refer to «Three-Way Catalytic Converter Replacement (Service)»(/cadillac/srx/ii-2009-2012/remont/exhaust/#engine-exhaust-system) .
  8. Install the secondary air injection pump pipe. Refer to «Secondary Air Injection Pump Pipe Replacement»(/cadillac/srx/ii-2009-2012/remont/testing-diagnostics/#engine-control-system-fuel-system-28l-30l-repair-instructions) .

Scheme 48

Scheme 48: Secondary Air Injection Pump Pipe Replacement
Scheme 48: Secondary Air Injection Pump Pipe Replacement
CalloutComponent Name
Preliminary Procedure Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement . Remove the secondary injection shutoff valve pressure sensor. Refer to Secondary Injection Shutoff Valve Pressure Sensor Replacement . Disconnect the air pump connectors. Refer to Plastic Collar Quick Connect Fitting Service .
1Secondary Air Injection Pump Pipe Fastener CAUTION: Refer to Fastener Caution Tighten: 10 N.m (89 lb in)
2Secondary Air Injection Pump Pipe
CAUTION
Refer to Fastener Caution

Scheme 49

Scheme 49: Secondary Injection Shutoff Valve Pressure Sensor Replacement
Scheme 49: Secondary Injection Shutoff Valve Pressure Sensor Replacement
CalloutComponent Name
1Secondary Injection Shutoff Valve Pressure Sensor Fastener (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 4 N.m (35 lb in)
2Secondary Injection Shutoff Valve Pressure Sensor
CAUTION
Refer to Fastener Caution .

Scheme 50

Scheme 50: Secondary Air Injection Pump Replacement
Scheme 50: Secondary Air Injection Pump Replacement
CalloutComponent Name
Preliminary Procedures Turn the ignition OFF. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection . Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
1Secondary Air Injection Pump Fastener (Qty: 2) CAUTION: Refer to Fastener Caution . Procedure Disconnect both quick connectors. Disconnect the electrical connector. Tighten: 17 N.m (13 lb ft)
2Secondary Air Injection Pump
CAUTION
Refer to Fastener Caution .

Scheme 51

Scheme 51: Secondary Air Injection Pump Hose Replacement
Scheme 51: Secondary Air Injection Pump Hose Replacement
CalloutComponent Name
Preliminary Procedures Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement . Disconnect the air pump connectors. Refer to Plastic Collar Quick Connect Fitting Service .
1Secondary Air Injection Pump Hose Fastener Procedure: Disconnect the plastic retainer. CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
CAUTION
Refer to Fastener Caution .

Scheme 52

Scheme 52: Air Cleaner Element Replacement (LF1)
Scheme 52: Air Cleaner Element Replacement (LF1)
CalloutComponent Name
Preliminary Procedure: Disconnect the air cleaner outlet duct from the air cleaner. Refer to Air Cleaner Outlet Duct Replacement (LF1) or Air Cleaner Outlet Duct Replacement (LAU) .
1Air Cleaner Element Procedure Disconnect the mass airflow with intake air temperature sensor electrical connector. Disconnect the throttle inlet absolute pressure sensor electrical connector. Release the air cleaner retaining clips.

Scheme 53

Scheme 53: Air Cleaner Element Replacement (LAU)
Scheme 53: Air Cleaner Element Replacement (LAU)
CalloutComponent Name
Preliminary Procedure Disconnect the air cleaner outlet duct from the air cleaner. Refer to Air Cleaner Outlet Duct Replacement (LF1) or Air Cleaner Outlet Duct Replacement (LAU) . Disconnect the secondary air injection hose from the air cleaner assembly. Refer to Secondary Air Injection Pump Hose Replacement .
1Air Cleaner Element Procedure Disconnect the mass airflow with intake air temperature sensor. Release the air cleaner retaining clips.

Scheme 54

Scheme 54: Air Cleaner Assembly Replacement (LF1)
Scheme 54: Air Cleaner Assembly Replacement (LF1)
CalloutComponent Name
Preliminary Procedure: Disconnect the air cleaner outlet duct from the air cleaner assembly. Refer to Air Cleaner Outlet Duct Replacement (LF1) or Air Cleaner Outlet Duct Replacement (LAU) .
1Air Cleaner Assembly Procedure Disengage the air cleaner housing grommets from the studs, while guiding the housing out of the inlet duct. If replacing the air cleaner assembly, transfer parts as necessary.

Scheme 55

Scheme 55: Air Cleaner Assembly Replacement (LAU)
Scheme 55: Air Cleaner Assembly Replacement (LAU)
CalloutComponent Name
Preliminary Procedure Disconnect the air cleaner outlet duct from the air cleaner assembly. Refer to Air Cleaner Outlet Duct Replacement (LF1) or Air Cleaner Outlet Duct Replacement (LAU) . Remove the mass airflow sensor. Refer to Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (LF1) or Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (LAU) . Disconnect the secondary air injection hose from the air cleaner. Refer to Secondary Air Injection Pump Hose Replacement
1Air Cleaner Assembly Procedure Disengage the air cleaner housing grommets from the studs, while guiding the housing out of the inlet duct. Transfer parts as necessary.

Scheme 56

Scheme 56: Air Cleaner Inlet Duct Replacement
Scheme 56: Air Cleaner Inlet Duct Replacement
CalloutComponent Name
Preliminary Procedure: Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement (LF1) or Air Cleaner Assembly Replacement (LAU) .
1Air Cleaner Inlet Duct

Scheme 57

Scheme 57: Air Cleaner Outlet Duct Replacement (LF1)
Scheme 57: Air Cleaner Outlet Duct Replacement (LF1)
CalloutComponent Name
Preliminary Procedure: Disconnect the positive crankcase ventilation tube. Refer to Positive Crankcase Ventilation Tube Replacement - Front .
1Air Cleaner Outlet Duct Clamp (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 4 N.m (35 lb in)
2Air Cleaner Outlet Duct
CAUTION
Refer to Fastener Caution .

Scheme 58

Scheme 58: Air Cleaner Outlet Duct Replacement (LAU)
Scheme 58: Air Cleaner Outlet Duct Replacement (LAU)
CalloutComponent Name
Preliminary Procedure: Remove the PCV pipe at the outlet duct. Refer to Positive Crankcase Ventilation Tube Replacement - Dipstick to Air Outlet Duct .
1Air Cleaner Outlet Duct Fastener CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Air Cleaner Outlet Duct Clamp Tighten: 4 N.m (35 lb in)
3Air Cleaner Outlet Duct Procedure: Disconnect the vacuum hose.
4Air Cleaner Outlet Duct Clamp to Turbo Tighten: 5 N.m (44 lb in)
CAUTION
Refer to Fastener Caution .

See also:
• Diagnostic Trouble Code (DTC) List - Vehicle
• Electrical Center Identification Views
• Battery Negative Cable Disconnection and Connection
• Engine Control Module Programming and Setup (LAU)
• Cooling System Draining and Filling (Static Fill LF1)
• Fastener Caution
• Intake Manifold Cover Replacement
• Lifting and Jacking the Vehicle
• Drivetrain and Front Suspension Frame Replacement
• Heated Oxygen and Oxygen Sensor Caution
• Adhesives, Fluids, Lubricants, and Sealers
• Special Tools
• Gasoline/Gasoline Vapors Warning
• Relieving Fuel Pressure Warning
• Exhaust Muffler Replacement (LF1)
• Propeller Shaft Replacement
• Evaporative Emission System Diagnosis
• Body Side Trim Panel Replacement
• Control Module References
• Special Tools
• Cylinder Head Replacement - Left Side (LF1)
• Fuel Rail and Injectors Cleaning and Inspection (LF1 or LFW)
• Safety Glasses and Compressed Air Warning
• Ignition System Specifications (LAU)
• Ignition System Specifications (LF1)
• Air Cleaner Outlet Duct Replacement (LF1)
• Fuel Pressure Relief
• Crankshaft Position System Variation Learn (LF1)

More articles — Engine Performance