Installation Procedure
- Remove the J-21366 strap from the transmission bell housing.
- Install the transmission to the vehicle.
- CAUTION:
Refer to Fastener Caution .
Install the six transmission to engine bolts (1, 2, 3, 4, 5, 6) and tighten to 58 N.m (43 lb ft).
Connect the transmission vent hose retainer (1) to the transmission bolt.
- Connect the electrical wiring harness retainers to the transmission to engine fasteners and to the transmission case.
- Install the transmission support. Transmission Support Replacement (RWD) .
- Remove the transmission jack from under the vehicle.
- Align the torque converter to flexplate 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 torque converter bolts (1):
- Rotate the harmonic balancer center bolt clockwise ONLY, in order to align the torque converter bolt holes in the flexplate with the starter opening in the engine block.
- Install all NEW torque converter bolts (1) and tighten to 63 N.m (46 lb ft).
Install the transmission close out plug (1).
- Transmission Converter Cover Replacement (Right Side, M5U) Transmission Converter Cover Replacement (Left Side, M5U) - Install
- Install the starter motor. Starter Replacement (LT4) .
Install the lower transmission to engine bolts (1, 2) and tighten to 58 N.m (43 lb ft).
Install the catalytic converter brace bracket (3) to the transmission.
- Install the two retaining nuts (1) and tighten to 22 N.m (16 lb ft).
- Install the two retaining bolts (2) and tighten to 22 N.m (16 lb ft).
Install the transmission fluid cooler inlet and outlet pipe (1) to the transmission. Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (LT4 With M5U) .
- Connect the wiring harness retainers and connectors to the transmission.
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Courtesy of GENERAL MOTORS COMPANY
Install the cable in the bracket, then slide the retainer (4) rearward to lock the transmission range selector lever cable in the bracket.
- Connect the transmission range selector lever cable terminal (1) to the transmission manual shift lever pin (2).
- Adjust the cable. Range Selector Lever Cable Adjustment .
- Transmission Heat Shield Replacement - Install
- Install the propeller shaft. Two-Piece Propeller Shaft Replacement (LT4, LTG) .
- Install the left side catalytic converter. Catalytic Converter Replacement - Left Side (LT4)
- Lower the vehicle.
- Check the transmission fluid level and fill if necessary. Transmission Fluid Level and Condition Check .
- Perform the solenoid valve characterization. Solenoid Valve Characterization Reprogramming
- Pressure regulating solenoid replacement
- Valve body repair or replacement
- Any service/repair in response to a shift quality concern
- Any internal transmission service, repair, overhaul, or replacement
- Torque converter replacement
- TCM replacement
- Transmission assembly replacement
- Perform the service fast learn procedure. Transmission Service Fast Learn Procedure
The Service Fast Learn procedure must be performed when one of the following repairs have been made to the vehicle. Failure to perform the procedure after one of the following repairs may result in poor transmission performance, as well as transmission DTCs being set:
The service fast learn procedure must be performed when any of the following repairs has been made to the transmission.