GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Notice: In order to prevent the vapor blow pipe assembly (located at the rear of the engine) from damaging the dash panel, you must support the engine before removing the transmission assembly.

Tools Required:

    • J 21366
    • J 35944-A
    • J 35944-22
  1. Disconnect the negative battery cable. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in General Information.

  2. Object Number: 13923  Size: SH
  3. Remove the transmission fluid level indicator.
  4. Raise the vehicle. Refer to Section 0A.
  5. Support the vehicle with safety stands.
  6. Remove the upper and lower underbody braces, if equipped. Refer to Section 10-3.
  7. Remove the complete exhaust system. Refer to General Exhaust System Replacement in Engine Exhaust.
  8. Suitably support the transmission.
  9. Remove the driveline support beam. Refer to SECTION 4A.
  10. Remove the propeller shaft. Refer to SECTION 4A.
  11. Disconnect the speedometer electrical connector.
  12. Remove the shift control cable. Refer to Shift Cable Replacement .
  13. Disconnect the electrical connectors at the transmission.
  14. Remove the converter cover. Refer to Torque Converter Cover Replacement .
  15. Important: Mark the alignment of the flywheel and the torque converter in order to retain proper balance.

  16. Remove the flywheel to converter bolts. Refer to Flywheel to Torque Converter Bolt Replacement .
  17. Remove the oil cooler pipes at the transmission. Refer to Oil Cooler Hose/Pipe Replacement .

  18. Object Number: 9097  Size: SH
  19. Remove the transmission to engine bolts.
  20. Remove the transmission. Use the J 21366 .
  21. Flush the transmission oil cooler and the pipes with J 35944-A whenever you remove the transmission for overhaul, or replacement of the torque converter, the pump, or the transmission case. Refer to Automatic Transmission Oil Cooler Flushing .

Installation Procedure

Tools Required:

J 21366

    Important: After installing driveline support, check the air intake duct to throttle body mating surface. If the air duct becomes dislodged from the throttle body, a driveability problem may occur.


    Object Number: 9097  Size: SH
  1. Install the transmission. Use the J 21366 .
  2. Install the transmission to engine bolts.
  3. Tighten
    Tighten the bolts to 47 N·m (35 lb ft).

    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 oil cooler pipes at the transmission. Refer to Oil Cooler Hose/Pipe Replacement .
  5. Important: Hand start all flywheel to converter bolts before torquing. This will ensure the proper alignment and avoid cross threading.

  6. Install the flywheel to converter bolts. Refer to Flywheel to Torque Converter Bolt Replacement .
  7. Install the converter cover and bolts. Refer to Torque Converter Cover Replacement .
  8. Install the electrical connectors at the transmission.
  9. Install the shift control cable. Refer to Shift Cable Replacement .
  10. Connect the speedometer electrical connector.
  11. Install the propeller shaft. Refer to SECTION 4A.
  12. Important: After you install the driveline support, check the air intake duct to throttle body mating surface. If the air duct becomes dislodged from the throttle body, a driveability problem may occur.

  13. Install the driveline support beam. Refer to SECTION 4A.
  14. Install the complete exhaust system. Refer to General Exhaust System Replacement in Engine Exhaust.
  15. Install the upper and lower underbody braces, if equipped. Refer to Section 10-3.
  16. Lower the vehicle.
  17. Install the transmission fluid level indicator.
  18. Connect the negative battery cable.