Transmission Replacement LH2
Removal Procedure
Note: NEW torque converter bolts and cooler pipe O-rings will be required each time the transmission is removed and installed.
- Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle.
- Remove the exhaust system. Refer to
Exhaust System Replacement.
- Remove the rear propeller shaft. Refer to
Rear Propeller Shaft Replacement.
- Remove the transfer case if equipped. Refer to
Transfer Case Assembly Replacement.
- Disconnect the shift linkage from the transmission. The linkage may be on the right or left side of the transmission depending on the application. Refer to
Shift Control Linkage Replacement.
- Disconnect the transmission wiring harness connector (1) from the transmission by rotating the locking latch counterclockwise.
- Disconnect the wiring harness retainers from the transmission, and position the wiring harness aside.
- Remove the front air deflector. Refer to
Front Air Deflector Replacement.
- Remove the transmission fluid cooler lines form the plastic cooler line retainer bracket.
- Place an oil drain pan under the transmission fluid cooler pipes.
- Remove the transmission fluid cooler pipes from the transmission, and position aside. Refer to
Transmission Fluid Cooler Pipe Replacement - Rear.
- Remove and discard the O-rings. Do NOT reuse the O-rings.
- Plug the open outlet ports to prevent fluid loss and contamination.
- Remove the transmission close out plug.
- Mark the torque converter to flexplate/flywheel orientation to ensure proper realignment.
- Pull the torque converter bolt close out cover upper retaining pin downward unlocking it from the engine block.
- Remove the torque converter bolt close out cover from the engine block.
- Repeat the following steps for all 3 torque converter bolts:
18.1. | Rotate the harmonic balancer center bolt or fan adapter, depending on the application, clockwise ONLY, in order to align the torque converter bolt with the access hole. |
18.2. | Remove and discard the torque converter bolt. The bolt is self locking and is NOT reusable. |
- Remove the front differential heat shield and bracket if equipped. Refer to
Shield Replacement.
Note: Be careful to NOT allow the front differential drive pinion flange, if equipped, to come in contract with power steering rack while lowering the transmission.
- Using the transmission jack. Lower the engine and transmission assembly only enough to gain access to the upper 2 transmission mounting bolts.
- Position the engine wiring harness out of the way.
- Remove the transmission vent hose from the transmission vent tube.
- Remove the upper 2 bolts.
- Using the transmission jack. Raise the engine and transmission assembly to the normal position.
- Place a support stand under the rear of the engine oil pan to keep the engine level while removing the transmission.
- Remove the lower 8 transmission mounting bolts.
- Pull the transmission free from the engine dowels (1).
- Separate the Transmission from the engine approximately 25.4 mm (1 in) to clear the starter drive nose cone.
Note: Ensure clearance is maintained between the transmission and the following:
• | The starter drive nose cone |
• | The catalytic converters |
- Carefully lower the transmission from the vehicle.
- Flush the transmission oil cooler. Refer to
Transmission Fluid Cooler Flushing and Flow Test.
Installation Procedure
Note: Ensure clearance is maintained between the transmission and the following:
• | The starter drive nose cone |
• | The catalytic converters |
- Using the transmission jack, carefully raise the transmission to meet the engine.
- Align the transmission with the engine dowels (1).
Caution: Refer to Fastener Caution in the Preface section.
- Install the lower 8 transmission mounting bolts.
Tighten
Tighten the bolts to 50 N·m (37 lb ft).
- Remove the support stand from under the engine oil pan.
Note: Be careful to NOT allow the front differential drive pinion flange, if equipped, to come in contract with power steering rack while lowering the transmission.
- Using the transmission jack. Lower the engine and transmission assembly only enough to gain access to the upper transmission bolt locations.
- Install the upper transmission mounting bolts.
Tighten
Tighten the bolts to 50 N·m (37 lb ft).
- Install the transmission vent hose to the transmission vent tube.
- Position the engine wiring harness to the original location.
- Install the transfer case if equipped. Refer to
Transfer Case Assembly Replacement.
- Align the torque converter to flexplate/flywheel orientation marks made during the removal procedure.
Note: Torque converter bolts are self locking and must be replaced with NEW torque converter bolts every time the bolts are removed.
- Complete the following steps for all 3 torque converter bolts:
11.1. | Rotate the harmonic balancer center bolt or the fan adapter, depending on the application, clockwise ONLY, in order to align the torque converter bolt holes in the flexplate/flywheel with the access hole in the engine block. |
11.2. | To aid in alignment of the torque converter to the flexplate/flywheel. Install all 3 NEW torque converter bolts before fully tightening. |
Tighten
Tighten the torque converter bolts to 60 N·m (44 lb ft).
- Install the torque converter bolt close out cover to the engine block.
- Push the torque converter bolt close out cover upper retaining pin upward locking it into the engine block.
- Install the transmission close out plug.
- Place NEW O-rings over the transmission fluid cooler pipes.
- Install the transmission fluid cooler pipes to the transmission. Refer to
Transmission Fluid Cooler Pipe Replacement - Rear.
- Clip the transmission fluid cooler lines into the plastic cooler line retainer bracket.
- Install the front differential heat shield and bracket. Refer to
Shield Replacement.
- Install the front air deflector. Refer to
Front Air Deflector Replacement.
- Connect the wiring harness retainers to the transmission.
- Connect the transmission wiring harness connector (1) to the transmission by rotating the locking latch clockwise.
- Connect the shift linkage to the transmission. Refer to
Shift Control Linkage Replacement.
- Install the rear propeller shaft. Refer to
Rear Propeller Shaft Replacement.
- Install the exhaust system. Refer to
Exhaust System Replacement.
- Check the transmission fluid level and fill if necessary. Refer to
Transmission Fluid Check.
- Adjust the shift control linkage. Refer to
Shift Control Linkage Adjustment.
- Lower the vehicle.
Transmission Final Test and Inspection
Complete the following procedure after the transmission is installed in the vehicle:
- With the ignition OFF or disconnected, crank the engine several times. Listen for any unusual noises or evidence that any parts are binding.
- Start the engine and listen for abnormal conditions.
- While the engine continues to idle, raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle.
- Inspect for fluid leaks while the engine is idling.
- Perform a final inspection for the proper fluid level.
- Lower the vehicle.
Note: It is recommended that transmission adaptive pressure (TAP) information be reset.
Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, The ECM, PCM or TCM will need to
relearn TAP values. Transmission performance may be affected as new TAP values are learned.
- Reset the TAP values. Refer to
Control Module References.
- Road test the vehicle.
Transmission Replacement LY7
Removal Procedure
Note: NEW torque converter bolts and cooler pipe O-rings will be required each time the transmission is removed and installed.
- Disconnect the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection.
- Remove the thermostat housing to gain access to the upper transmission mounting bolts. Refer to
Engine Coolant Thermostat Housing Replacement.
- Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle.
- Remove the exhaust system. Refer to
Exhaust System Replacement.
- Remove the rear propeller shaft. Refer to
Rear Propeller Shaft Replacement.
- Remove the transfer case if equipped. Refer to
Transfer Case Assembly Replacement.
- Disconnect the shift linkage from the transmission. The linkage may be on the right or left side of the transmission depending on the application. Refer to
Shift Control Linkage Replacement.
- Disconnect the transmission wiring harness connector (1) from the transmission (2) by rotating the locking latch counterclockwise.
- Disconnect the wiring harness retainers from the transmission, and position the wiring harness aside.
- Remove the transmission fluid cooler lines from the plastic cooler line retainer bracket.
- Place an oil drain pan under the transmission fluid cooler pipes.
- Remove the transmission fluid cooler pipes from the transmission, and position aside. Refer to
Transmission Fluid Cooler Pipe Replacement - Rear.
- Remove and discard the O-rings. Do NOT reuse the O-rings.
- Plug the open outlet ports to prevent fluid loss and contamination.
- Remove the starter motor to gain access to the torque converter bolts. Refer to
Starter Motor Replacement.
- Mark the torque converter to flexplate/flywheel orientation to ensure proper realignment.
- Remove the front air deflector. Refer to
Front Air Deflector Replacement.
- Repeat the following steps for all 3 torque converter bolts:
18.1. | Rotate the harmonic balancer center bolt or fan adapter, depending on the application, clockwise ONLY, in order to align the torque converter bolt with the access hole. |
18.2. | Remove and discard the torque converter bolt. The bolt is self locking and is NOT reusable. |
- Remove the front differential heat shield and bracket if equipped. Refer to
Shield Replacement.
Note: Be careful to NOT allow the front differential drive pinion flange, if equipped, to come in contract with power steering rack while lowering the transmission.
- Using the transmission jack. Lower the engine and transmission assembly only enough to gain access to the upper 2 transmission mounting bolts.
- Position the engine wiring harness out of the way.
- Remove the upper 2 bolts.
- Using the transmission jack. Raise the engine and transmission assembly to the normal position.
- Place a support stand under the rear of the engine oil pan to keep the engine level while removing the transmission.
- Remove the lower 8 transmission mounting bolts.
- Pull the transmission free from the engine dowels (1).
Note: Ensure clearance is maintained between the transmission and the following:
• | The starter drive nose cone |
• | The catalytic converters |
- Carefully lower the transmission from the vehicle.
- Flush the transmission oil cooler. Refer to
Transmission Fluid Cooler Flushing and Flow Test.
- If the transmission is being replaced and it is a rear wheel drive vehicle, transfer the drive flange from the old unit to the new unit. Refer to
Drive Flange and Seal Replacement.
Installation Procedure
Note: Ensure clearance is maintained between the transmission and the following:
• | The catalytic converters |
- Using the transmission jack, carefully raise the transmission to meet the engine.
- Align the transmission with the engine dowels (1).
Caution: Refer to Fastener Caution in the Preface section.
- Install the lower 8 transmission mounting bolts.
Tighten
• | Tighten the M10 x 1.5 bolts to 50 N·m (37 lb ft). |
• | Tighten the M12 x 1.75 bolts to 75 N·m (55 lb ft). |
- Remove the support stand from under the engine oil pan.
Note: Be careful to NOT allow the front differential drive pinion flange, if equipped, to come in contract with power steering rack while lowering the transmission.
- Using the transmission jack. Lower the engine and transmission assembly only enough to gain access to the upper transmission bolt locations.
- Install the upper transmission mounting bolts.
Tighten
• | Tighten the M10 x 1.5 bolts to 50 N·m (37 lb ft). |
• | Tighten the M12 x 1.75 bolts to 75 N·m (55 lb ft). |
- Position the engine wiring harness to the original location.
- Install the transfer case if equipped. Refer to
Transfer Case Assembly Replacement.
- Align the torque converter to flexplate/flywheel orientation marks made during the removal procedure.
Note: Torque converter bolts are self locking and must be replaced with NEW torque converter bolts every time the bolts are removed.
- Complete the following steps for all 3 torque converter bolts:
10.1. | Rotate the harmonic balancer center bolt or the fan adapter, depending on the application, clockwise ONLY, in order to align the torque converter bolt holes in the flexplate/flywheel with the access hole in the engine block. |
10.2. | To aid in alignment of the torque converter to the flexplate/flywheel. Install all 3 NEW torque converter bolts before fully tightening. |
Tighten
Tighten the torque converter bolts to 63 N·m (46 lb ft).
- Install the starter motor. Refer to
Starter Motor Replacement.
- Install the front air deflector. Refer to
Front Air Deflector Replacement.
- Place NEW O-rings over the transmission fluid cooler pipes.
- Install the transmission fluid cooler pipes to the transmission. Refer to
Transmission Fluid Cooler Pipe Replacement - Rear.
- Clip the transmission fluid cooler lines into the plastic cooler line retainer bracket.
- Install the front differential heat shield and bracket, if equipped. Refer to
Shield Replacement.
- Connect the wiring harness retainers to the transmission.
- Connect the transmission wiring harness connector (1) to the transmission by rotating the locking latch clockwise.
- Connect the shift linkage to the transmission. Refer to
Shift Control Linkage Replacement.
- Install the rear propeller shaft. Refer to
Rear Propeller Shaft Replacement.
- Install the exhaust system. Refer to
Exhaust System Replacement.
- Install the thermostat housing. Refer to
Engine Coolant Thermostat Housing Replacement.
- Connect the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection.
- Check the transmission fluid level and fill if necessary. Refer to
Transmission Fluid Check.
- Adjust the shift control linkage. Refer to
Shift Control Linkage Adjustment.
- Lower the vehicle.
Transmission Final Test and Inspection
Complete the following procedure after the transmission is installed in the vehicle:
- With the ignition OFF or disconnected, crank the engine several times. Listen for any unusual noises or evidence that any parts are binding.
- Start the engine and listen for abnormal conditions.
- While the engine continues to idle, raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle.
- Inspect for fluid leaks while the engine is idling.
- Perform a final inspection for the proper fluid level.
- Lower the vehicle.
Note: It is recommended that transmission adaptive pressure (TAP) information be reset.
Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, the ECM, PCM or TCM will need to
relearn TAP values. Transmission performance may be affected as new TAP values are learned.
- Reset the TAP values. Refer to
Control Module References.
- Road test the vehicle.