GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 36221 Hydraulic Clutch Line Separator

  1. Shift the transmission into the third or fourth mechanical gear position.
  2. Remove the shift lever. Refer to Shift Lever Replacement .
  3. Remove the shift housing. Refer to Shift Tower Replacement .
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Remove the transmission oil. Refer to Fluid Replacement .
  6. Remove the starter motor. Refer to Starter Motor Replacement in Engine Electrical.
  7. Remove the 3 bolts that secure the transmission to the clutch housing cover.
  8. Remove the propeller shaft. Refer to the appropriate procedure in Propeller Shaft:
  9. •  Two-Piece Propeller Shaft Replacement
    •  Three-Piece Propeller Shaft Replacement
  10. Remove the parking brake and controls, if equipped. Refer to Backing Plate Replacement in Parking Brake.
  11. Remove the exhaust pipes from the exhaust manifold. Remove the catalytic converter from the muffler assembly, if required. Refer to General Exhaust System Replacement in Exhaust System.
  12. Remove the wiring harness connectors from the speed sensor and the backup lamp switch.
  13. Remove the wiring harness retainers from the transmission.
  14. Remove the transmission vent hose from the NV4500  transmission.
  15. Support the transmission with a jack.
  16. Remove the washer and the nut that retain the transmission mount to the crossmember.
  17. Remove the transmission crossmember from the vehicle.
  18. Remove the bell housing bolts that secure the transmission to the engine block.
  19. Important: 

       • Do not allow the transmission to hang from the clutch plate and the clutch cover.
       • Pull the transmission straight back on the clutch hub splines.

  20. Remove the transmission from the engine.

Installation Procedure

  1. Raise the transmission using a transmission jack.
  2. Install the transmission.
  3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the bell housing bolts that secure the transmission.
  5. Tighten
    Tighten the bolts to 73 N·m (54 lb ft).

  6. Install the transmission crossmember and the bolts.
  7. Tighten
    Tighten the bolts to 77 N·m (56 lb ft).

  8. Lower the vehicle and remove the jack.
  9. Install the washer and the nut that retain the transmission mount to the crossmember.
  10. Tighten
    Tighten the nut to 44 N·m (33 lb ft).

  11. Install the vent hose onto the transmission.
  12. Install the exhaust pipes to the exhaust manifold install the catalytic converter to the muffler assembly if required. Refer to General Exhaust System Replacement in Exhaust System.
  13. Install the wiring harness retainers to the transmission.
  14. Install the wiring harness connectors to the speed sensor and the back up switch.
  15. Install the parking brake and controls, if equipped. Refer to Backing Plate Replacement in Parking Brake.
  16. Install the 3 bolts that secure the transmission to the clutch housing cover.
  17. Install the starter motor. Refer to Starter Motor Replacement in Engine Electrical.
  18. Install the propeller shaft. Refer to the appropriate procedure in Propeller Shaft:
  19. •  Two-Piece Propeller Shaft Replacement
    •  Three-Piece Propeller Shaft Replacement
  20. Install new transmission oil. Refer to Fluid Replacement .
  21. Lower the vehicle.
  22. Install the shift housing. Refer to Shift Tower Replacement .
  23. Install the shift lever. Refer to Shift Lever Replacement .