Engine Controls/fuel - 2.0l (Ltg) or 2.5l (Lcv) - Repair Instructions Cadillac ATS I

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 unlearn the coking. To accelerate the process, the scan tool has the ability to reset all learned values back to zero. A new ECM will also have values set to zero.

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

Conditions for Running the Throttle Learn Procedure

Scan tool Idle Learn or Idle Learn Reset Procedure

1. DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0122, P0123, P0128, P0171, P0172, P0174, P0175, P0201-P0208, P0220, P0222, P0223, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P0279, P0280, P0282, P0283, P0300-P0308, P0351-P0358, 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).

Service Bay/On Road Learn Procedure

1. DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0116, P0117, P0118, P0120, P0122, P0123, P0128, P0171, P0172, P0174, P0175, P0201-P0208, P0220, P0222, P0223, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P0279, P0280, P0282, P0283, P0300-P0308, P0351-P0358, P0496, P0601, P0604, P0606, P060D, P0641, P0651, P1516, P2101, P2119, P2120, P2122, P2123, P2125, P2127, P2128, P2135, P2138, or P2176 are not set.
2. The engine speed is between 450-4,000 RPM.
3. The manifold absolute pressure (MAP) is greater than 5 kPa.
4. The mass air flow (MAF) is greater than 2 g/s.
5. The ignition voltage is greater than 10 volts.

Throttle Learn

Scan Tool Idle Learn or Idle Learn Reset Procedure - Performed after the throttle body is cleaned or replaced

1. Ignition ON, engine OFF, perform the Idle Learn or Idle Learn Reset in Configuration/Reset or Module Setup.
2. Engine idling, observe the scan tool Throttle Body Idle Airflow Compensation parameter. The Throttle Body Idle Airflow Compensation value should equal 0 % and the engine should be idling at a normal idle speed.
3. Clear the DTCs and return to the diagnostic that referred you here.

Service Bay/On Road Idle Learn Procedure - Performed after the ECM is programmed or replaced

1. Engine idling for 3 min.
2. Observe the scan tool Desired Idle Speed and the actual Engine Speed parameters.
3. The ECM will start to learn the new idle cells and the Desired Idle Speed should start to decrease.
4. Ignition OFF for 60 s.
5. Start and idle the engine for 3 min.
6. After the 3 min 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 s and repeat step 6.
8. Once the engine speed has returned to normal, clear DTCs and return to the diagnostic that referred you here.

Crankshaft Position System Variation Learn

Note. The Crankshaft Position Variation Learn procedure is also required when the following service procedures have been performed, regardless of whether DTC P0315 is set: An engine replacement An engine control module (ECM) replacement A crankshaft balancer replacement A crankshaft removal and/or replacement A crankshaft position sensor disturbance/removal and/or 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 Variation Learn procedure.

1. Ignition ON, observe the DTC information with a scan tool. Verify no other DTCs are set, except DTCs P0300-P0304, or P0315. If DTCs are set, except DTCs P0300-P0304, or P0315, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/ats/i-2012-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) for further diagnosis.
2. Select the Crankshaft Position Variation Learn Procedure with a scan tool and follow the on screen instructions
3. Verify DTC P0315 does not set. If DTC P0315 set, or another DTC is present refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/ats/i-2012-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) for the applicable DTC that set. If the DTC does not set
4. All OK.

Scheme 1

Engine Control Module Replacement (LCV)

Scheme 2

Engine Control Module Replacement (LTG)

Scheme 3

Engine Control Module Bracket Replacement (LCV)

Scheme 4

Engine Control Module Bracket Replacement (LTG)

Scheme 5

Engine Coolant Temperature Sensor Replacement

Scheme 6

Engine Oil Pressure Sensor Replacement

Scheme 7

Intake Air Pressure and Temperature Sensor Replacement (LTG)

Scheme 8

Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (LCV)

Scheme 9

Mass Airflow Sensor with Intake Air Temperature Sensor Replacement (LTG)

Scheme 10

Manifold Absolute Pressure Sensor Replacement

Scheme 11

Heated Oxygen Sensor Replacement - Sensor 1 (LCV)

Scheme 12

Heated Oxygen Sensor Replacement - Sensor 1 (LTG)

Scheme 13

Heated Oxygen Sensor Replacement - Sensor 2 (LCV)

Scheme 14

Heated Oxygen Sensor Replacement - Sensor 2 (LTG)

Scheme 15

Accelerator Pedal with Position Sensor Assembly Replacement

Scheme 16

Throttle Body Assembly Replacement

Throttle Body Cleaning

1. Remove the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement (LCV)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) , «Air Cleaner Outlet Duct Replacement (LTG)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
2. Inspect the throttle body bore and the throttle valve plate for deposits. You must open the throttle valve in order to inspect all of the surfaces.
3. Clean the throttle body bore and the throttle valve plate using a clean shop towel and approved cleaner.
4. Install the air cleaner outlet duct. Refer to «Air Cleaner Outlet Duct Replacement (LCV)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) , «Air Cleaner Outlet Duct Replacement (LTG)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
5. Perform the throttle/idle learn procedure. Refer to «Control Module References»(/cadillac/ats/i-2012-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) .

Fuel Pressure Relief

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.

Fuel Pressure Gauge Installation and Removal

Special Tools

1. CH-47831 Fuel Line Disconnect Tool
2. J 34730-1A Fuel Pressure Gauge
3. J 42982 Fuel Pressure Gauge Adapter

Installation Procedure

1. Relieve the fuel pressure. Refer to «Fuel Pressure Relief»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions__fuel-pressure-relief) .
2. Disconnect the quick connect coupling of the fuel feed hose from the fuel feed pipe of the fuel rail. Use a shop towel in order to catch any remaining fuel that may leak.
3. Remove the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/ats/i-2012-2014/remont/mechanical/#engine-mechanical-20l-ltg-or-25l-lcv-repair-instructions-on-vehicle) .
4. Install the J 42982 adapter between the fuel feed pipe of the fuel rail and of the fuel feed hose.
5. Install the J 34730-1A gauge to the J 42982 adapter , and tighten securely.
6. Turn ON the ignition in order to pressurize the fuel system.
7. Turn OFF the ignition.
8. Check for any fuel leaks.

Removal Procedure

1. Relieve the fuel pressure. Refer to the «Fuel Pressure Relief»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions__fuel-pressure-relief) .
2. Remove the J 34730-1A gauge from the J 42982 adapter.
3. Using the CH-47831 tool , disconnect the quick connect coupling of the J 42982 adapter from the fuel feed pipe of the fuel rail. Use a shop towel in order to catch any remaining fuel that may leak.
4. Disconnect the quick connect coupling of the fuel feed hose (3) from the J 42982 adapter , and remove the adapter. Use a shop towel in order to catch any remaining fuel that may leak.
5. Connect the quick-connect fitting of the fuel feed hose (3) to the fuel feed pipe of the fuel rail.
6. Turn ON the ignition in order to pressurize the fuel system.
7. Turn OFF the ignition.
8. Check for any fuel leaks.
9. Install the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/ats/i-2012-2014/remont/mechanical/#engine-mechanical-20l-ltg-or-25l-lcv-repair-instructions-on-vehicle) .

Metal Collar Quick Connect Fitting Service

Special Tools

1. CH-41769 Fuel Line Disconnect Tool Set
2. CH-44581 Fuel Line Disconnect Tool

For equivalent regional tools, refer to Special Tools (Diagnostic Tools) .

1. Relieve the fuel system pressure. Refer to «Fuel Pressure Relief»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-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.

Note. If servicing a fuel system, insure the fuel pressure has been relieved.

Scheme 17

Note. There are several types of plastic collar fuel and evaporative emission quick connect fittings used on this vehicle. Bartholomew (1) Q Release (2) Squeeze to Release (3) Sliding Retainer (4) Global Connect (5) TI Loc (6) Safe Lock (7) Plastic Connector (8) The following instructions apply to all of these types of plastic collar quick connect fittings except where indicated.

1. Using compressed air, blow any dirt out of the quick-connect fitting.
2. This step applies to Bartholomew style connectors ONLY. Squeeze the plastic quick-connect fitting release tabs.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. 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.
10. This step applies to the Plastic Connector style 8, push the connector toward the tube in order to release the pressure. Press the latch (1) inward in order to release the pipe, while pulling the connector (2) 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. For the plastic connector type 8, depress the latch (1) while inserting the connector (3) on to the pipe (2) .
9. Move the latch (1) upward in order to secure the connection.
10. 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 18

Fuel Filter Replacement (LTG)

Special Tools

1. DT 36850 Transjel Lubricant
2. CH 45004 Fuel Tank Drain Hose

1. Raise and Support the Vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/ats/i-2012-2014/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle)
2. Loosen the lower fill hose clamp in order to separate the fill hose from the fuel tank (1).
3. Insert the CH 45004 Fuel Tank Drain Hose into the fuel tank (1) until the hose reaches the bottom of the fuel tank.
4. Use a hand or air operated pump device in order to drain as much fuel from the fuel tank as possible.

Scheme 19

Fuel Tank Protector Replacement

1. Relieve the system fuel pressure. Refer to «Fuel Pressure Relief»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions__fuel-pressure-relief)
2. Drain the fuel tank. Refer to «Fuel Tank Draining»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions) .
3. Remove the left and right side rear air deflectors. Refer to «Underbody Rear Air Deflector Replacement - Left Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) , and «Underbody Rear Air Deflector Replacement - Right Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
4. Remove the two piece propeller shaft. Refer to «Two-Piece Propeller Shaft Replacement»(/cadillac/ats/i-2012-2014/remont/driveshaft-universal-joints/#propeller-shaft) .
5. Disconnect the evaporative emission and fuel pipes (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions) .
6. Disconnect the fuel tank electrical connector.
7. Support the fuel tank with a suitable jack.
8. Remove the fuel tank strap bolts (1).
9. Remove the fuel tank straps (2).
10. Remove the fuel tank (1).
11. Remove the following components if replacing just the fuel tank. Fuel tank fuel pump module. Refer to «Fuel Tank Fuel Pump Module Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions__fuel-tank-fuel-pump-module-replacement) . Transfer components as necessary.

1. Install the following components if fuel tank replacement was necessary: Fuel tank fuel pump module. Refer to «Fuel Tank Fuel Pump Module Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions__fuel-tank-fuel-pump-module-replacement) .
2. Use a suitable jack and install the fuel tank (1).
3. Install the fuel tank straps (2).
4. Install the fuel tank strap bolts (1) and tighten to 20 N.m (15 lb ft).
5. Connect the evaporative emission and fuel pipes (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions) .
6. Connect the fuel tank electrical connector.
7. Install the two piece propeller shaft. Refer to «Two-Piece Propeller Shaft Replacement»(/cadillac/ats/i-2012-2014/remont/driveshaft-universal-joints/#propeller-shaft) .
8. Install the left and right side rear air deflectors. Refer to «Underbody Rear Air Deflector Replacement - Left Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) , and «Underbody Rear Air Deflector Replacement - Right Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
9. Refill the fuel tank.
10. Inspect for fuel leaks.

1. Relieve the system fuel pressure. Refer to «Fuel Pressure Relief»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions__fuel-pressure-relief) .
2. Drain the fuel tank. Refer to «Fuel Tank Draining»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions) .
3. Remove the left and right side rear air deflectors. Refer to «Underbody Rear Air Deflector Replacement - Left Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) , and «Underbody Rear Air Deflector Replacement - Right Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
4. Remove the two piece propeller shaft. Refer to «Two-Piece Propeller Shaft Replacement»(/cadillac/ats/i-2012-2014/remont/driveshaft-universal-joints/#propeller-shaft) .
5. Disconnect the evaporative emission and fuel pipes (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions) .
6. Disconnect the fuel tank harness connector.
7. Support the fuel tank with a suitable jack.
8. Remove the fuel tank strap bolts (1).
9. Remove the fuel tank straps (2).
10. Remove the fuel tank (1).
11. Remove the following components if replacing just the fuel tank. Fuel tank fuel pump module. Refer to «Fuel Tank Fuel Pump Module Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions__fuel-tank-fuel-pump-module-replacement) . Transfer components as necessary.

1. Install the following components if fuel tank replacement was necessary: Fuel tank fuel pump module. Refer to «Fuel Tank Fuel Pump Module Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions__fuel-tank-fuel-pump-module-replacement) .
2. Use a suitable jack and install the fuel tank (1).
3. Install the fuel tank straps (2).
4. Install the fuel tank strap bolts (1) and tighten to 20 N.m (15 lb ft).
5. Install the filler pipe and tighten the hose clamps (1).
6. Connect the fuel tank harness connector.
7. Connect the evaporative emission and fuel pipes (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-36l-lfx-repair-instructions) .
8. Install the two piece propeller shaft. Refer to «Two-Piece Propeller Shaft Replacement»(/cadillac/ats/i-2012-2014/remont/driveshaft-universal-joints/#propeller-shaft) .
9. Install the left and right side rear air deflectors. Refer to «Underbody Rear Air Deflector Replacement - Left Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) , and «Underbody Rear Air Deflector Replacement - Right Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
10. Refill the fuel tank.
11. Inspect for fuel leaks.

Fuel System Cleaning

Note. When flushing the fuel tank, treat the fuel and water mixture as a hazardous material. Handle the material in accordance with all local, state and federal laws and regulations.

Note. Whenever the fuel tank is cleaned, inspect the fuel pump fuel strainer. If the fuel pump fuel strainer is contaminated, replace the fuel pump fuel strainer and inspect the fuel pump.

Note. Always maintain cleanliness when servicing fuel system components.

1. Remove the fuel tank fuel pump module. Refer to «Fuel Tank Fuel Pump Module Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions__fuel-tank-fuel-pump-module-replacement) .
2. Inspect the fuel pump inlet for dirt and debris. If dirt and debris are found, replace the fuel pump.
3. Flush fuel tank with hot water.
4. Pour the water out of the fuel sender assembly opening in the fuel tank. Rock the fuel tank in order to ensure that the removal of the water from the fuel tank is complete.
5. Allow tank to dry completely before reassembly.
6. Install the fuel tank fuel pump module. Refer to «Fuel Tank Fuel Pump Module Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions__fuel-tank-fuel-pump-module-replacement) .

Fuel Tank Fuel Pump Module Replacement

Special Tools

CH 45722 Fuel Sender Lock Ring Wrench

For equivalent regional tools, refer to Special Tools (Diagnostic Tools)

1. Remove the fuel tank. Refer to «Fuel Tank Replacement (LCV)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) , «Fuel Tank Replacement (LTG)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
2. Disconnect the fuel pump electrical connector and the quick connects. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Use the CH 45722 wrench by turning counter clockwise and remove the lock ring (1).
4. Disconnect the fuel pump vent hose (1) and transfer hose (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
5. Remove the fuel tank module (1) and the O-ring (2).

1. Install a NEW seal (2) and the fuel tank module (1).
2. Connect the fuel pump vent hose (1) and transfer hose (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Use the CH 45722 wrench by turning clockwise and install the lock ring (1).
4. Connect the fuel pump electrical connector and the quick connects. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
5. Install the fuel tank. Refer to «Fuel Tank Replacement (LCV)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) , «Fuel Tank Replacement (LTG)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .

Scheme 20

Fuel Pump Flow Control Module Replacement

Scheme 21

Fuel Tank Pressure Sensor Replacement

Fuel Sender Assembly Replacement

Special Tools

CH 45722 Fuel Sender Lock Ring Wrench

For equivalent regional tools, refer to Special Tools (Diagnostic Tools)

1. Remove the fuel tank. Refer to «Fuel Tank Replacement (LCV)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) , «Fuel Tank Replacement (LTG)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
2. Disconnect the fuel sender assembly electrical connector.
3. Use the CH 45722 wrench by turning counter clockwise and remove the lock ring (1).
4. Disconnect the fuel sender assembly transfer hose (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
5. Remove the fuel sender assembly (1) and the O-ring (2).

1. Install a NEW seal (2) and the fuel sender assembly (1).
2. Connect the fuel sender assembly transfer hose (1). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Use the CH 45722 wrench by turning clockwise and install the lock ring (1).
4. Connect the fuel sender assembly electrical connector.
5. Install the fuel tank. Refer to «Fuel Tank Replacement (LCV)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) , «Fuel Tank Replacement (LTG)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .

Scheme 22

Fuel Level Sensor Replacement

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/ats/i-2012-2014/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
2. Remove the fuel tank filler pipe fastener (1).
3. Remove the fuel tank filler pipe clamp (2).
4. Place a clean drain pan large enough to capture the fuel that may be expelled once the hose is removed.
5. Remove the fuel tank filler pipe (3) from the fuel tank.
6. Remove the right rear wheelhouse panel liner. Refer to «Rear Wheelhouse Liner Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
7. Remove the fuel tank filler pipe housing. Refer to «Fuel Tank Filler Pipe Housing Replacement»(/cadillac/ats/i-2012-2014/remont/exteriorinterior-trim/#bolted-exterior-body-panels-and-closures) .
8. Remove the tie straps (3) attaching the evaporative emission canister purge pipe and fuel tank vent hose to the fuel tank filler pipe.
9. Remove the fuel tank filler pipe fastener (1).
10. Remove the fuel tank vent hose (2) from the fuel tank filler pipe. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
11. Support the rear suspension with a jack stand.
12. Loosen the two right side suspension cradle bolts and lower the cradle slightly to remove the fill pipe.
13. Remove the fuel tank filler pipe (4) from the vehicle.

1. Install the fuel tank filler pipe (4) to the vehicle.
2. Install two new RH side cradle bolts and tighten to specification. Refer to «Rear Suspension Cradle Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
3. Install the fuel tank vent hose (2) to the fuel tank filler pipe. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
4. Install the fuel tank filler pipe fastener (1) and tighten to 9 (80 lb in).
5. Install NEW tie straps (3) that attach the evaporative emission canister purge pipe and fuel tank vent hose to the fuel tank filler pipe.
6. Install the fuel tank filler pipe housing. Refer to «Fuel Tank Filler Pipe Housing Replacement»(/cadillac/ats/i-2012-2014/remont/exteriorinterior-trim/#bolted-exterior-body-panels-and-closures) .
7. Install the right rear wheelhouse panel liner. Refer to «Rear Wheelhouse Liner Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
8. Install the fuel tank filler pipe (3) to the fuel tank.
9. Install the fuel tank filler pipe clamp (2).
10. Install the fuel tank filler pipe fastener (1) and tighten to 9 (80 lb in).
11. Remove the drain pan.
12. Lower the vehicle.

Scheme 23

Fuel Pump Cover Replacement

Scheme 24

Fuel Pump Insulator Replacement (Inner)

Scheme 25

Fuel Pump Insulator Replacement (Outer)

1. Relieve the system fuel pressure. Refer to «Fuel Pressure Relief»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions__fuel-pressure-relief) .
2. Remove the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/ats/i-2012-2014/remont/mechanical/#engine-mechanical-20l-ltg-or-25l-lcv-repair-instructions-on-vehicle) .
3. Remove the fuel feed pipe (1) from the engine and retainers. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions__metal-collar-quick-connect-fitting-service) .
4. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/ats/i-2012-2014/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
5. Remove the underbody front air deflector right side. Refer to «Underbody Front Air Deflector Replacement - Right Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
6. Remove the front body exhaust heat shield right side. Refer to «Front Body Exhaust Heat Shield Replacement (Right)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) , «Front Body Exhaust Heat Shield Replacement (Left)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) .
7. Disconnect the fuel feed pipe (1) and remove from retainers (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
8. Remove the fuel feed pipe (1) from the vehicle.

1. Install the fuel feed pipe (1) to the vehicle.
2. Connect the fuel feed pipe (1) and install to the retainers (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Install the front body exhaust heat shield right side. Refer to «Front Body Exhaust Heat Shield Replacement (Right)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) , «Front Body Exhaust Heat Shield Replacement (Left)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) .
4. Install the underbody front air deflector right side. Refer to «Underbody Front Air Deflector Replacement - Right Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
5. Lower the vehicle.
6. Install the fuel feed pipe (1) to the engine and retainers. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions__metal-collar-quick-connect-fitting-service) .
7. Install the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/ats/i-2012-2014/remont/mechanical/#engine-mechanical-20l-ltg-or-25l-lcv-repair-instructions-on-vehicle) .

1. Relieve the system fuel pressure. Refer to «Fuel Pressure Relief»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions__fuel-pressure-relief) .
2. Remove the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/ats/i-2012-2014/remont/mechanical/#engine-mechanical-20l-ltg-or-25l-lcv-repair-instructions-on-vehicle) .
3. Remove the fuel feed pipe (1) from the engine and retainers. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions__metal-collar-quick-connect-fitting-service) .
4. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/ats/i-2012-2014/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
5. Remove the underbody front air deflector right side. Refer to «Underbody Front Air Deflector Replacement - Right Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
6. Remove the front body exhaust heat shield right side. Refer to «Front Body Exhaust Heat Shield Replacement (Right)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) , «Front Body Exhaust Heat Shield Replacement (Left)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) .
7. Disconnect the fuel feed pipe (1) and remove from retainers (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
8. Remove the fuel feed pipe (1) from the vehicle.

1. Install the fuel feed pipe (1) to the vehicle.
2. Connect the fuel feed pipe (1) and install to the retainers (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Install the front body exhaust heat shield right side. Refer to «Front Body Exhaust Heat Shield Replacement (Right)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) , «Front Body Exhaust Heat Shield Replacement (Left)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) .
4. Install the underbody front air deflector right side. Refer to «Underbody Front Air Deflector Replacement - Right Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
5. Lower the vehicle.
6. Install the fuel feed pipe (1) to the engine and retainers. Refer to «Metal Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions__metal-collar-quick-connect-fitting-service) .
7. Install the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/ats/i-2012-2014/remont/mechanical/#engine-mechanical-20l-ltg-or-25l-lcv-repair-instructions-on-vehicle) .

Scheme 26

Fuel Pressure Sensor Replacement - Fuel Feed Pipe (LCV)

Scheme 27

Fuel Pressure Sensor Replacement - Fuel Feed Pipe (LTG)

Scheme 28

Fuel Feed Intermediate Pipe Replacement

Scheme 29

Fuel Tank Vent Valve Hose Replacement (LCV Fuel Tank Fuel Pump Module)

Scheme 30

Fuel Tank Vent Valve Hose Replacement (LCV At Tank)

Scheme 31

Fuel Tank Vent Valve Hose Replacement (LTG At Tank)

Scheme 32

Fuel Tank Vent Valve Hose Replacement (LTG Fuel Tank Fuel Pump Module)

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/ats/i-2012-2014/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
2. Disconnect the fuel tank vent hose (1) from the fuel tank vent valve hose. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Remove the right rear wheelhouse panel liner. Refer to «Rear Wheelhouse Liner Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
4. Disconnect the fuel tank pressure sensor electrical connector.
5. Remove the tie straps (1) attaching the fuel tank vent hose to the fuel tank filler pipe.
6. Remove the fuel tank vent hose (4) from the fuel tank filler pipe (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
7. Remove the fuel tank vent hose (4) from the retainers (3).
8. Remove the fuel tank vent hose (4) from the EVAP emission canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .

1. If replacing hose then transfer the fuel tank pressure sensor. Refer to «Fuel Tank Pressure Sensor Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
2. Install the fuel tank vent hose (4) to the EVAP emission canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Install the fuel tank vent hose (4) to the retainers (3).
4. Install the fuel tank vent hose (4) to the fuel tank filler pipe (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
5. Install NEW tie straps (1) to attach the fuel tank vent hose to the fuel tank filler pipe.
6. Connect the fuel tank pressure sensor electrical connector.
7. Install the right rear wheelhouse panel liner. Refer to «Rear Wheelhouse Liner Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
8. Connect the fuel tank vent hose (1) to the fuel tank vent valve hose. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
9. Lower the vehicle.

Scheme 33

Fuel Pump Replacement

Scheme 34

Fuel Pump Fuel Feed Hose Replacement (LCV)

Scheme 35

Fuel Pump Fuel Feed Hose Replacement (LTG Flex Sensor to Pipe)

Scheme 36

Fuel Pump Fuel Feed Hose Replacement (LTG Flex Sensor to Fuel Pump to Fuel Filter)

Scheme 37

Fuel Pump Fuel Feed Hose Replacement (LTG Fuel Pump to Fuel Filter)

Fuel Injection Fuel Rail Assembly Replacement

Special Tools

1. EN-49248 Fuel Rail Assembly Remover
2. EN-47909 Injector Bore and Sleeve Cleaning Kit

For equivalent regional tools, refer to Special Tools .

1. Remove the fuel injection fuel rail noise shield (1). Refer to «Fuel Injection Fuel Rail Noise Shield Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
2. Remove the fuel feed intermediate pipe. Refer to «Fuel Feed Intermediate Pipe Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Remove the fuel injection fuel rail pressure sensor. Refer to «Fuel Injection Fuel Rail Fuel Pressure Sensor Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
4. Disconnect the electrical harness from the fuel rail harness connection.
5. Remove the fuel rail assembly retaining bolts and upper rubber grommets, if necessary.
6. Install EN-49248 studs (1) into the 2 outermost fuel rail assembly retaining bolt locations. Tighten the studs to 22 (16 lb ft).
7. Install EN-49248 remover (2) onto each stud, and engage the hooks to the fuel rail. Install the nuts (3) retaining the remover onto the studs and tighten until snug.
8. Using EN-49248 remover , remove the fuel rail assembly.

1. Clean the fuel injector bore in the cylinder head using the EN-47909 kit.
2. Replace the fuel rail insulators, if necessary. Refer to «Fuel Rail and Injectors Cleaning and Inspection»(/cadillac/ats/i-2012-2014/remont/mechanical/#engine-mechanical-20l-ltg-or-25l-lcv-repair-instructions-off-vehicle__fuel-rail-and-injectors-cleaning-and) . Replace the fuel rail bolts, if necessary.
3. Install the fuel rail (1) with injectors into the cylinder head evenly.
4. Hand start the 2 outer fuel rail bolts (2) to seat the injectors into the injector bores.
5. Hand start the remaining fuel rail bolts.
6. Tighten the fuel rail bolts in sequence to 25 (18 lb ft).
7. Connect the electrical harness to the fuel rail harness connections.
8. Install the fuel injection fuel rail pressure sensor. Refer to «Fuel Injection Fuel Rail Fuel Pressure Sensor Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
9. Install the fuel feed intermediate pipe. Refer to «Fuel Feed Intermediate Pipe Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
10. Install the fuel injection fuel rail noise shield (1). Refer to «Fuel Injection Fuel Rail Noise Shield Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .

Scheme 38

Fuel Injection Fuel Rail Noise Shield Replacement

Scheme 39

Fuel Injection Fuel Rail Fuel Pressure Sensor Replacement

Fuel Injector and Fuel Rail Replacement

Special Tools

1. EN-49248 Fuel Rail Assembly Remover
2. EN-47909 Injector Bore and Sleeve Cleaning Kit

For equivalent regional tools, refer to Special Tools .

1. Remove the fuel injection fuel rail noise shield (1). Refer to «Fuel Injection Fuel Rail Noise Shield Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
2. Remove the fuel feed intermediate pipe. Refer to «Fuel Feed Intermediate Pipe Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Remove the fuel injection fuel rail pressure sensor. Refer to «Fuel Injection Fuel Rail Fuel Pressure Sensor Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
4. Disconnect the electrical harness from the fuel rail harness connection.
5. Remove the fuel rail assembly retaining bolts and upper rubber grommets, if necessary.
6. Install EN-49248 studs (1) into the 2 outermost fuel rail assembly retaining bolt locations. Tighten the studs to 22 (16 lb ft).
7. Install EN-49248 remover (2) onto each stud, and engage the hooks to the fuel rail. Install the nuts (3) retaining the remover onto the studs and tighten until snug.
8. Using EN-49248 remover , remove the fuel rail assembly.

1. Clean the fuel injector bore in the cylinder head using the EN-47909 kit.
2. Replace the fuel rail insulators, if necessary. Refer to «Fuel Rail and Injectors Cleaning and Inspection»(/cadillac/ats/i-2012-2014/remont/mechanical/#engine-mechanical-20l-ltg-or-25l-lcv-repair-instructions-off-vehicle__fuel-rail-and-injectors-cleaning-and) . Replace the fuel rail bolts, if necessary.
3. Install the fuel rail (1) with injectors into the cylinder head evenly.
4. Hand start the 2 outer fuel rail bolts (2) to seat the injectors into the injector bores.
5. Hand start the remaining fuel rail bolts.
6. Tighten the fuel rail bolts in sequence to 25 (18 lb ft).
7. Connect the electrical harness to the fuel rail harness connections.
8. Install the fuel injection fuel rail pressure sensor. Refer to «Fuel Injection Fuel Rail Fuel Pressure Sensor Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
9. Install the fuel feed intermediate pipe. Refer to «Fuel Feed Intermediate Pipe Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
10. Install the fuel injection fuel rail noise shield (1). Refer to «Fuel Injection Fuel Rail Noise Shield Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .

Fuel Injector Replacement

Special Tools

1. EN-47909 Injector Bore and Sleeve Cleaning Kit
2. EN-49245 Fuel Injector Seal Installer and Sizer
3. EN-50791 Fuel Injector Nozzle Installer

For equivalent regional tools, refer to Special Tools .

1. Remove the fuel injection fuel rail assembly. Refer to «Fuel Injection Fuel Rail Assembly Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions__fuel-injection-fuel-rail-assembly-replacement) .
2. Remove and inspect the fuel rail insulator assemblies (1-4). Replace the entire assembly if any components show signs of wear or the insulators (4) show the following conditions: Dry or cracked appearance Flattened or misshapen appearance
3. Disconnect the electrical connections from the fuel injectors.
4. Use EN-50791 installer (3) to compress the fuel injector (1), and relieve pressure on the retaining pin (2). Remove the fuel injector retaining pin (2). Remove EN-50791 installer once the retaining pin is removed.
5. Remove the injectors (1) from the fuel rail by pulling straight out along the fuel injector axis. Slight rotation of the fuel injector is acceptable as long as excessive force is not applied to the fuel injector tab while engaged in the fuel rail slot (3).
6. Remove the fuel injector holding clamp (2) from the rear of the fuel injector.
7. Remove and discard the fuel injector O-ring (2) and plastic spacer (1).
8. Remove and discard the fuel injector seals (3).
9. Clean the exterior of the fuel rail (1) and injectors in solvent.
10. Using EN-47909 cleaning kit , clean the fuel injector bores and sleeves.
11. Inspect the fuel rail and components for the following conditions: Damage, debris, or restrictions to the fuel rail Damage, debris, or restrictions to the fuel ports in the fuel rail Damage to the mounting area for the fuel rail Damage to the fuel rail mounting bolts Damage to the threads on the fuel rail fuel feed fitting
12. Replace the fuel rail if any damage is found. Do not attempt to repair a fuel rail.
13. Inspect the fuel pressure sensor (3) for damage. Disconnect the harness connector (2) from the fuel pressure sensor. Remove the fuel pressure sensor. Dry the fuel pressure sensor bore in the fuel rail with a lint free cloth. The bore should be free of fuel, debris, and burrs. Lubricate the fuel rail fuel pressure sensor bore with clean engine oil. Lubricate the threads and sealing area on the fuel pressure sensor with clean engine oil. Install the fuel pressure sensor hand tight. Remove the fuel pressure sensor and re-lubricate the bore, threads, and sealing area. Install the fuel pressure sensor and tighten to 33 (24 lb ft). Connect the harness connector to the fuel pressure sensor.
14. Inspect the fuel injectors for the following conditions: Damage to the fuel injector connector (3) Damage to the fuel injector harness connector Damage to the fuel injector tip (5) Damage to the fuel injector (4)
15. Replace the fuel injector if any damage is found. Do not attempt to repair a fuel injector.
16. Install the a new fuel injector spacer (1).
17. Lubricate the new O-ring (2) with clean, silicone-free 5W30 engine oil.
18. Install the O-ring on the injector.
19. Install the fuel injector holding clamp (2) onto the rear of the fuel injector.
20. Hand install fuel injectors (1) to the fuel rail, carefully aligning the fuel injector tab to the slot in the fuel rail (3).
21. Using EN-50791 installer (3), compress the fuel injector (1) into the fuel rail.
22. Ensure the fuel injector is fully seated in the fuel rail, and install the fuel injector retaining pin (4).
23. Ensure the fuel injector retaining pin is fully seated in the fuel rail. Remove EN-50791 installer. Repeat process until all fuel injectors are properly installed to the fuel rail.
24. Connect the electrical connection to the fuel rail.
25. Connect the fuel rail harness connectors (1) to the fuel injectors.
26. Install EN-49245 protector (2) onto the fuel injector tip. Place a NEW seal (1) on EN-49245 protector.
27. Install a seal into the second recessed area (3) of the fuel injector.
28. Compress the seal with your fingers, then resize the seal using the EN-49245 sizer (4).
29. Place a second NEW seal (1) on EN-49245 protector.
30. Install the seal into the first recessed area of the fuel injector.
31. Compress the seal with your fingers, then resize the seal using the EN-49245 sizer (4).
32. Install the fuel injection fuel rail assembly. Refer to «Fuel Injection Fuel Rail Assembly Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions__fuel-injection-fuel-rail-assembly-replacement) .

Scheme 40

Evaporative Emission Canister Purge Solenoid Valve Replacement (LCV)

Scheme 41

Evaporative Emission Canister Purge Solenoid Valve Replacement (LTG)

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/ats/i-2012-2014/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
2. Disconnect the evaporative emission canister purge pipe (1) from the fuel tank vent valve hose. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Remove the right rear wheelhouse panel liner. Refer to «Rear Wheelhouse Liner Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
4. Remove the tie straps (1) attaching the evaporative emission canister purge pipe to the fuel tank filler pipe.
5. Remove the evaporative emission canister purge pipe (3) from the retainers (2).
6. Remove the evaporative emission canister purge pipe (3) from the EVAP emission canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .

1. Install the evaporative emission canister purge pipe (3) to the EVAP emission canister. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
2. Install the evaporative emission canister purge pipe (3) to the retainers (2).
3. Install NEW tie straps (1) to attach the evaporative emission canister purge pipe to the fuel tank filler pipe.
4. Install the right rear wheelhouse panel liner. Refer to «Rear Wheelhouse Liner Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
5. Connect the evaporative emission canister purge pipe (1) to the fuel tank vent valve hose. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
6. Lower the vehicle.

Scheme 42

Evaporative Emission Canister Purge Tube Replacement

Scheme 43

Evaporative Emission Canister Vent Solenoid Valve Replacement

1. Remove the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/ats/i-2012-2014/remont/mechanical/#engine-mechanical-20l-ltg-or-25l-lcv-repair-instructions-on-vehicle) .
2. Remove the evaporative emission pipe (1) from the evaporative emission canister purge solenoid valve and retainers. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/ats/i-2012-2014/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
4. Remove the underbody front air deflector right side. Refer to «Underbody Front Air Deflector Replacement - Right Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
5. Remove the front body exhaust heat shield right side. Refer to «Front Body Exhaust Heat Shield Replacement (Right)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) , «Front Body Exhaust Heat Shield Replacement (Left)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) .
6. Disconnect the evaporative emission pipe (1) and remove from retainers (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
7. Remove the evaporative emission pipe (1) from the vehicle.

1. Install the evaporative emission pipe (1) to the vehicle.
2. Connect the evaporative emission pipe (1) and install to the retainers (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Install the front body exhaust heat shield right side. Refer to «Front Body Exhaust Heat Shield Replacement (Right)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) , «Front Body Exhaust Heat Shield Replacement (Left)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) .
4. Install the underbody front air deflector right side. Refer to «Underbody Front Air Deflector Replacement - Right Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
5. Lower the vehicle.
6. Install the evaporative emission pipe (1) to the evaporative emission canister purge solenoid valve and retainers. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
7. Install the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/ats/i-2012-2014/remont/mechanical/#engine-mechanical-20l-ltg-or-25l-lcv-repair-instructions-on-vehicle) .

1. Remove the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/ats/i-2012-2014/remont/mechanical/#engine-mechanical-20l-ltg-or-25l-lcv-repair-instructions-on-vehicle) .
2. Remove the evaporative emission pipe (1) from the evaporative emission canister purge solenoid valve and retainers. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/ats/i-2012-2014/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
4. Remove the underbody front air deflector right side. Refer to «Underbody Front Air Deflector Replacement - Right Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
5. Remove the front body exhaust heat shield right side. Refer to «Front Body Exhaust Heat Shield Replacement (Right)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) , «Front Body Exhaust Heat Shield Replacement (Left)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) .
6. Disconnect the evaporative emission pipe (1) and remove from retainers (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
7. Remove the evaporative emission pipe (1) from the vehicle.

1. Install the evaporative emission pipe (1) to the vehicle.
2. Connect the evaporative emission pipe (1) and install to the retainers (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Install the front body exhaust heat shield right side. Refer to «Front Body Exhaust Heat Shield Replacement (Right)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) , «Front Body Exhaust Heat Shield Replacement (Left)»(/cadillac/ats/i-2012-2014/remont/exhaust/#engine-exhaust-system) .
4. Install the underbody front air deflector right side. Refer to «Underbody Front Air Deflector Replacement - Right Side»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
5. Lower the vehicle.
6. Install the evaporative emission pipe (1) to the evaporative emission canister purge solenoid valve and retainers. Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
7. Install the intake manifold cover. Refer to «Intake Manifold Cover Replacement»(/cadillac/ats/i-2012-2014/remont/mechanical/#engine-mechanical-20l-ltg-or-25l-lcv-repair-instructions-on-vehicle) .

Scheme 44

Evaporative Emission Canister Air Inlet Hose Replacement

Scheme 45

Evaporative Emission Canister Replacement

Evaporative Emission System Cleaning

Special Tools

GE 41413-200 Evaporative Pressure and Purge Station

For equivalent regional tools, refer to Special Tools (Diagnostic Tools) .

Inspection Procedure

1. Turn OFF the ignition.
2. Remove the EVAP canister purge valve. Refer to «Evaporative Emission Canister Purge Solenoid Valve Replacement (LCV)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) , «Evaporative Emission Canister Purge Solenoid Valve Replacement (LTG)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-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/ats/i-2012-2014/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
2. Remove the EVAP canister. Refer to «Evaporative Emission Canister Replacement»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-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»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
11. Lower the vehicle.
12. Install a new EVAP canister purge valve. Refer to «Evaporative Emission Canister Purge Solenoid Valve Replacement (LCV)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) , «Evaporative Emission Canister Purge Solenoid Valve Replacement (LTG)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
13. Return to the diagnostic table that sent you here.

Scheme 46

Ignition Coil Replacement

Scheme 47

Spark Plug Replacement

Spark Plug Usage

Ensure that the correct spark plug is installed. An incorrect spark plug causes driveability conditions. Refer to the Electronic Parts Catalog.

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 condition is often mistakenly identified as a cracked insulator. 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. This must be done carefully in order to avoid damaging the small diameter Iridium center electrode. Refer to «Ignition System Specifications»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-specifications__ignition-system-specifications) . An excessively wide electrode gap can prevent correct spark plug operation. Inspect for the correct spark plug torque. Refer to «Ignition System Specifications»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-specifications__ignition-system-specifications) . Insufficient torque can prevent correct spark plug operation. An over torqued spark plug, causes the insulator (2) to crack. Inspect for signs of tracking that occurred near the insulator tip instead of the center electrode (4). Inspect for a broken or worn side electrode (3). Inspect for a broken, worn, or loose center electrode (4) by shaking the spark plug. A rattling sound indicates internal damage. A loose center electrode (4) reduces the spark intensity. Inspect for bridged electrodes (3, 4). Deposits on the electrodes (3, 4) reduce or eliminates the gap. Inspect for worn or missing platinum pads on the electrodes (3, 4) If equipped. Inspect for excessive fouling.
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. Reddish orange deposits can indicate MMT fuel additive which is still used in some markets around the world (will cause misfire and cannot be burned off). MMT fuel additive use should be avoided.
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.

Scheme 48

Crankshaft Position Sensor Replacement

Scheme 49

Camshaft Position Sensor Replacement - Intake

Scheme 50

Camshaft Position Sensor Replacement - Exhaust

Scheme 51

Camshaft Position Actuator Exhaust Solenoid Valve Replacement

Scheme 52

Camshaft Position Actuator Intake Solenoid Valve Replacement

Scheme 53

Knock Sensor Replacement

Scheme 54

Oil Pump Flow Control Valve Replacement

Scheme 55

Oil Pump Flow Control Valve Heat Shield Replacement

Scheme 56

Flexible Fuel Sensor Replacement (LTG)

Scheme 57

Vacuum Pump Replacement

Scheme 58

Turbocharger Wastegate Actuator Replacement (LTG)

Scheme 59

Turbocharger Wastegate Regulator Solenoid Valve Replacement (LTG)

Scheme 60

Turbocharger Bypass Valve Solenoid Replacement (LTG)

Scheme 61

Secondary Air Injection Check Valve Replacement

1. Remove the secondary air injection pump hose (1) from the secondary air injection pump (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
2. Remove the secondary air injection pump hose (2) bracket fastener (1).
3. Disconnect the secondary air injection pump hose (2) from the secondary air injection check valve (3).
4. Raise and properly support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/ats/i-2012-2014/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
5. Remove the secondary air injection pump hose (2) bracket fastener (1).
6. Lower the vehicle.
7. Remove the secondary air injection pump hose from the vehicle.

1. Reposition the secondary air injection pump hose to the vehicle.
2. Connect the secondary air injection pump hose (2) to the secondary air injection check valve (3). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
3. Install the secondary air injection pump hose (2) bracket fastener (1) and tighten to 10 (89 lb in).
4. Connect the secondary air injection pump hose (1) to the secondary air injection pump (2). Refer to «Plastic Collar Quick Connect Fitting Service»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
5. Raise and properly support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/ats/i-2012-2014/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
6. Install the secondary air injection pump hose (2) bracket fastener (1) and tighten the fasteners to 10 (89 lb in).
7. Lower the vehicle.

Scheme 62

Secondary Air Injection Pump Inlet Hose Replacement

Scheme 63

Secondary Air Injection Pump Replacement

Scheme 64

Air Cleaner Element Replacement (LCV)

Scheme 65

Air Cleaner Element Replacement (LTG)

Scheme 66

Air Cleaner Assembly Replacement (LCV)

Scheme 67

Air Cleaner Assembly Replacement (LTG)

Scheme 68

Air Cleaner Outlet Duct Replacement (LCV)

Scheme 69

Air Cleaner Outlet Duct Replacement (LTG)

Scheme 70

Intake Air Splash Shield Replacement

1. Disconnect the intake air pressure and temperature sensor electrical connector.
2. Remove the charge air cooler outlet air tube (1) from the throttle body (2) while rotating the collar counterclockwise.
3. Remove the front wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
4. Pull the release clip (1) outward and disconnect the charge air cooler outlet air tube (2) from the charge air cooler (3).
5. Remove the charge air cooler outlet air tube (2) from the vehicle.

1. Install the charge air cooler outlet air tube (2) to the vehicle.
2. Connect the charge air cooler outlet air tube (2) to the charge air cooler (3) and engage the retaining clip (1).
3. Install the front wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
4. Install the charge air cooler outlet air tube (1) to the throttle body (2) while rotating the collar clockwise.
5. Connect the intake air pressure and temperature sensor electrical connector.

1. Remove the air cleaner assembly. Refer to «Air Cleaner Assembly Replacement (LTG)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .
2. Loosen the clamp and disconnect the charge air cooler inlet air tube from the inlet air hose.
3. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/cadillac/ats/i-2012-2014/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
4. Remove the engine compartment lower noise shield. Refer to «Engine Compartment Lower Noise Shield Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
5. Remove the front wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
6. Remove the charge air cooler inlet air tube bolts (1) from the charge air cooler inlet air tube (2).
7. Lower the vehicle.
8. Remove the charge air cooler inlet air tube from the turbocharger.
9. Pull the release clip (1) outward and disconnect the charge air cooler inlet air tube (2) from the charge air cooler.
10. Remove the charge air cooler inlet air tube (2) from the vehicle.

1. Install the charge air cooler inlet air tube (2) to the vehicle.
2. Connect the charge air cooler inlet air tube (2) to the charge air cooler and engage the retaining clip (1).
3. Install the charge air cooler inlet air tube to the turbocharger.
4. Raise the vehicle.
5. Install the charge air cooler inlet air tube bolts (1) to the charge air cooler inlet air tube (2) and tighten to 10 (89 lb in).
6. Install the front wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
7. Install the engine compartment lower noise shield. Refer to «Engine Compartment Lower Noise Shield Replacement»(/cadillac/ats/i-2012-2014/remont/frames-subframes-crossmembers/#frame-and-underbody) .
8. Lower the vehicle.
9. Install the clamp and connect the charge air cooler inlet air tube to the inlet air hose.
10. Install the air cleaner assembly. Refer to «Air Cleaner Assembly Replacement (LTG)»(/cadillac/ats/i-2012-2014/remont/testing-diagnostics/#engine-controlsfuel-20l-ltg-or-25l-lcv-repair-instructions) .

Scheme 71

Charge Air Cooler Radiator Replacement (LTG)

See also:
• Diagnostic Trouble Code (DTC) List - Vehicle
• Battery Negative Cable Disconnection and Connection
• Front Compartment Fuse Block Housing Replacement
• Safety Glasses Warning
• Control Module References
• Fastener Caution
• Cooling System Draining and Filling (Static Fill)
• Cooling System Draining and Filling (GE 47716)
• Intake Manifold Cover Replacement
• Plenum Front Panel Replacement
• Power Brake Booster Pump Replacement (3.6L)
• Lifting and Jacking the Vehicle
• Component Fastener Tightening Caution
• Heated Oxygen Sensor Resistance Learn Reset Caution
• Special Tools (Diagnostic Tools)
• Engine Compartment Lower Noise Shield Replacement
• Special Tools (Diagnostic Tools)
• Gasoline/Gasoline Vapors Warning
• Fuel Pressure Relief
• Relieving Fuel Pressure Warning
• Two-Piece Propeller Shaft Replacement
• Fuel Tank Draining
• Fuel Tank Fuel Pump Module Replacement
• Radiator Inlet Pipe Replacement (LCV, LTG)
• Front Body Exhaust Heat Shield Replacement (Right)
• Special Tools
• Adhesives, Fluids, Lubricants, and Sealers
• Fuel Rail and Injectors Cleaning and Inspection
• Adhesives, Fluids, Lubricants, and Sealers
• Ignition System Specifications
• Air Conditioning Condenser Replacement (LTG with M3L, V03)
• Engine Control Module Replacement (LCV)
• Fuel Pressure Relief
• Fuel Tank Fuel Pump Module Replacement
• Metal Collar Quick Connect Fitting Service
• Fuel Injection Fuel Rail Assembly Replacement
• Spark Plug Inspection
• Crankshaft Position System Variation Learn