Removal Procedure
- Turn the ignition key to the LOCK position.
- Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
- Recover the air conditioning (A/C) refrigerant. Refer to Refrigerant Recovery and Recharging .
- Remove the air intake duct. Refer to Air Cleaner Inlet Duct Replacement .
- Depressurize the fuel system. Refer to Fuel Pressure Relief .
- Remove the radiator outlet hose. Refer to Radiator Outlet Hose Replacement .
- Remove the accessory wiring junction block. Refer to Accessory Wiring Junction Block Replacement .
- Loosen the coolant bleed hose retaining clamp (1) at the cylinder head end and slide 50 mm (2 in) along the coolant bleed hose (3).
- Disconnect the coolant air bleed hose (3) from the coolant bleed pipe (2).
- Disconnect the inlet and outlet heater hoses (3) from the heater hose assembly quick connect fittings (1).
- Release the ECM retaining clips (1) and detach the ECM (2).
- Move the connector lock levers to the unlock position and disconnect the ECM electrical connectors (1).
- Disconnect harness connectors (1 and 2).
- Remove the engine harness connector (3) from the underhood junction box.
- Detach harness retainers and reposition and secure the engine wiring harness and connectors (1, 2 and 3) on the engine.
- Remove the vehicle body ground cable to cylinder head retaining nut (1).
- Remove the vehicle body ground cable (3) from the cylinder head stud (2).
- Disconnect the A/C electrical connector (1) from the A/C compressor.
- Disconnect the electrical connector from the A/C refrigerant pressure sensor (1).
- Remove the suction/discharge pipes pad (1) to compressor retaining bolt.
- Disconnect the suction/discharge pipes (1) from the compressor (3).
- Remove and discard the port sealing washers (2).
Discard the port sealing washers (2).
- Cap or plug the A/C compressor (3) ports.
- Cap or plug the A/C hoses (1).
- Compress the vacuum hose retaining clamp (2) at the intake manifold vacuum port (1) and slide 50 mm (2 in) back along the vacuum hose (3).
- Disconnect the vacuum hose (3) from the intake manifold vacuum port (1).
- Disconnect the fuel rail feed pipe (2) quick connect fitting.
- Remove the remote positive battery post cover (1) from the remote positive battery post.
- Remove the remote positive battery post to wiring harness retaining nut (1).
- Remove the wiring harness (2) from the remote positive battery post.
- Disconnect the throttle body to EVAP purge valve hose (3) from the EVAP purge valve (1).
- Disconnect the EVAP purge valve to fuel tank hose (2) from the EVAP purge valve (1).
- Remove the A/C suction pipe pad to lower A/C suction pipe retaining nut (1).
- Disconnect the upper A/C suction pipe (1) from the lower A/C suction pipe (3).
- Plug or cap the A/C suction pipe ends.
- Remove and discard the A/C suction pipe sealing O-ring (2).
- Reposition and retain the A/C suction/discharge pipes away from the engine.
- Secure radiator and condenser assembly (2) to the front end assembly (3) with large zip ties or equivalent.
- Place a suitable container beneath the radiator and engine.
- Using the J 41623-B
cooler quick connect tool, disconnect the automatic transmission cooler pipe (2) from the flexible hose (1).
- Open the J 41623-B cooler quick connect tool, then close and clip around the hose to be disconnected.
- While holding the flexible hose (1) push the hose inwards with one hand, then pull back to separate from the steel hose piping (2).
- Repeat for the second fitting if required.
- Reposition and secure the flexible hoses (1) away from the engine and subframe.
- When major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.
- When performing work in the engine compartment or under the vehicle, ensure that the hood is fully open, or opened to its secondary latch. When the hood is opened to the secondary latch, the vehicle will disable the remote start features from the key fob and OnStar mobile app. Failure to open the hood, or open the hood to the secondary latch while doing a repair in the engine compartment or under the vehicle can result in inadvertent vehicle starting which could result in personal injury or damage to a vehicle.
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
- Remove the front bumper fascia extension. Refer to Front Bumper Fascia Extension Replacement .
- Remove the exhaust system. Refer to Exhaust System Replacement .
- Remove the center heat shield. Refer to Exhaust Heat Shield Replacement - Center .
- Remove the propeller shaft. Refer to Propeller Shaft Replacement .
- Remove the starter. Refer to Starter Replacement (LS3) .
- Remove the front wheels. Refer to Tire and Wheel Removal and Installation .
- Detach the front brake hose (1) from the front strut mounted brake hose retaining bracket (2). Repeat for opposite side.
- Remove the front brake caliper anchor plate to knuckle retaining bolts (1). DISCARD the bolts. Repeat for opposite side.
- Remove the front brake caliper (2) from the front steering knuckle (3). Repeat for opposite side.
- Support the front brake caliper (1) with heavy mechanic's wire, or equivalent (2). Repeat for opposite side.
- Remove the two wheel nuts (4) retaining the front brake disc (3) to the hub (5). Repeat for opposite side.
- From inside the engine compartment, disconnect both front wheel speed sensor electrical connectors.
- Release the wheel speed sensor harness grommets (1) from the brake hose bracket and secure the harness to the front suspension. Refer to Front Wheel Speed Sensor Replacement .
- Mark the intermediate steering shaft (1) in relation to the pinion shaft (3).
- Remove and DISCARD the intermediate steering shaft to pinion shaft retaining bolt (2).
- Disconnect the intermediate shaft (2) from the pinion shaft (3).
- Remove the transmission manual shift shaft nut (3).
- Disconnect the shift linkage (1) from the transmission shift shaft (2).
- Lower the vehicle.
- Retain the front strut assembly (1) to the front subframe (3) using heavy mechanics wire or equivalent (2). Repeat for opposite side.
- Remove the stud dust cover (1) from the strut assembly to front wheelhouse retaining nut (2). Repeat for opposite side.
- Remove and DISCARD the strut assembly to front wheelhouse retaining nut (2) while holding the strut piston shaft (4). Repeat for opposite side.
- Remove the strut assembly to front wheelhouse retaining plate (3). Repeat for opposite side.
- Position a suitable powertrain and/or engine lift table below the frame, engine and transmission.
- Raise the lift table and/or lower the vehicle to support the frame, engine and transmission.
- Remove the transmission support to body retaining bolts (1).
- Remove the front subframe reinforcement plate to front subframe retaining bolts (2).
- Remove the front subframe reinforcement plate (3) from the front subframe (1).
- Remove the front subframe to body rear retaining bolts (1).
- Remove the front subframe to body front retaining bolt (1). Repeat for opposite side.
- Remove the front subframe to body retaining bolt (1). Repeat for opposite side.
- With the aid of an assistant, lower the table and/or raise the vehicle to remove the engine, transmission, front suspension and subframe assembly from the vehicle.
- Remove the engine and transmission wiring harness and related components.
- Remove the automatic transmission cooler pipe clamp to A/C bracket bolt (1) and position the automatic transmission cooler pipes (2) aside.
- Position the J 41798
engine lift brackets (1) on the cylinder heads (3).
Tighten
Tighten the bolts (2) to 50 N.m (36 lb ft).
- Connect a suitable lifting crane to the engine lift brackets and raise the suitable lifting crane to support the engine.
- Position a second powertrain lift table below the transmission.
- Remove the automatic transmission flex plate. Refer to Automatic Transmission Flex Plate Removal
- Remove the accessory drive belt. Refer to Drive Belt Replacement - Accessory .
- Remove the A/C drive belt. Refer to Air Conditioning Compressor Belt Replacement .
- Remove the lower engine mount to front subframe retaining nut (1) from both engine mounts.
- Using a suitable lifting crane, raise the engine to clear the engine mount stud.
- Remove the engine from the subframe. If required mount the engine on a suitable engine stand.
Observing the orientation of the intermediate steering shaft with reference to the pinion shaft will minimize the potential of incorrect steering column assembly alignment.
The front wheels of the vehicle must be maintained in the straight ahead position and the steering column must be in the LOCK position before disconnecting the steering column or intermediate shaft. If these procedures are not followed incorrect alignment of some components during installation will result and damage to the SIR coil assembly will occur.
Refer to Battery Disconnect Warning .
Disconnect the heater hose assembly quick connect fittings (1) by releasing the retaining clips (2) using a suitable tool.
Refer to Powertrain Control Module and Electrostatic Discharge Caution .
Sealing washers are single use and must be discarded after use.
Seal pipes immediately to prevent absorption of moisture from the atmosphere.
The plugs for A/C compressor ports must be sufficient to stop oil escaping when tilting A/C compressor for removal.
Cap or plug the ports immediately to prevent absorption of moisture from the atmosphere.
Plug or cap the fuel feed pipe (2) and fuel rail tube (1) ends to prevent fuel leaks and/or contamination.
Plug or cap the throttle body to EVAP purge valve hose (3) and EVAP purge valve (1) ends to prevent fuel leaks and/or contamination.
Plug or cap the EVAP purge valve to fuel tank hose (2) and EVAP purge valve (1) ends to prevent fuel leaks and/or contamination.
Plug or cap the A/C suction pipe ends (1 and 3) immediately to prevent contamination and absorption of moisture from the atmosphere.
The A/C suction pipe sealing O-ring (2) is a single use component and will not reseal. Install a NEW A/C suction pipe sealing O-ring (2) whenever the upper A/C suction pipe (1) is removed from the lower A/C suction pipe (3).
It is necessary to secure the radiator and condenser assembly (2) to the front end assembly (3) as the radiator and condenser assembly is supported to the subframe.
Thread zip tie A around the front end assembly and zip tie B through the radiator and condenser mount (1). Insert zip tie A into the retainer of zip tie B and insert zip tie B into the retainer of zip tie A.
The flexible hoses are not serviced separately. Therefore if the hose's require replacement, then the hose and radiator to hose cooler hose assembly must be fitted.
When removal is complete plug hose openings with a clean lint free cloth to prevent foreign matter entry.
To avoid any vehicle damage, serious personal injury or death:
Refer to Safety Glasses Warning .
Nuts with micro-encapsulated thread sealant must be discarded after removal.
DO NOT disconnect the hydraulic brake flexible hose from the brake caliper otherwise complete bleeding of the braking system will be necessary.
Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.
Observing the orientation of the intermediate steering shaft (1) with reference to the pinion shaft (3) will minimize the potential of incorrect steering column assembly alignment.
Bolts with micro-encapsulated thread sealant must be discarded after removal.
The strut assembly (1) must be secured to the subframe (3) to prevent damage to the front wheelhouse liner, fenders and suspension components.
The strut assembly (4) must be supported from underneath before the strut assembly to body retaining nut (2) is removed.
Only right side depicted in graphic, left side similar.
Only right side depicted in graphic, left side similar.
Make sure that all the hoses, wires, pipes and front struts clear the vehicle during the removal process.
Refer to Fastener Caution .