GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Grand Am 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Transmission Replacement

Removal Procedure
    • J 28467-360 Engine Support Fixture
    • J 35944-A Oil Cooler Flushing Tool

    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.

  1. Disconnect the negative battery cable.
  2. Remove the air intake duct.
  3. Remove the shift linkage from the transmission.

    4. Object Number: 97313 Size: SH
  4. Remove the vacuum modulator vacuum line at the modulator.

    5. Object Number: 106168 Size: SH

    Important: When servicing requires that the T latch type wiring connector be disconnected from the switch, care must be taken in order to ensure proper reassembly of both the connector and the T latch. Failure to do so may result in intermittent loss of switch functions.

  5. Remove the following wiring connectors:
    6. • The TCC connector
    • The Park/Neutral position switch
    • The shift solenoid connector

    Object Number: 104328 Size: SH
  6. Install the J 28467-360 .

    7. Object Number: 106169 Size: SH
  7. Remove the top two transmission to engine bolts.
  8. Remove the rubber hose from the transmission to vent pipe.

    9. Object Number: 106171 Size: SH
  9. Remove the remaining upper engine to transmission bolts.
  10. Raise the vehicle. Support the vehicle. Refer to Vehicle Lifting Caution in General Information.
  11. Remove both the tire and the wire assemblies. Refer to Wheel Removal in Tires and Wheels.
  12. Remove the right and the left splash shields.
  13. Remove both the front ABS wheel speed sensors and the harness from the left side suspension support. Refer to Wheel Speed Sensor Replacement in Antilock Brake System and Enhanced Traction System.
  14. Remove both of the ball joints from the control arms. Refer to Lower Control Arm Ball Joint Replacement in Front Suspension.
  15. Remove the left stabilizer shaft link pin bolt. Refer to Stabilizer Shaft Link Replacement in Front Suspension.
  16. Remove the left stabilizer shaft frame bushing clamp nuts. Refer to Stabilizer Shaft Replacement in Front Suspension.
  17. Remove the front suspension crossmember. Refer to Front Suspension Crossmember Replacement in Front Suspension.
  18. Remove both of the drive axles. Refer to Wheel Drive Shaft Replacement in Wheel Drive Shafts.
  19. Remove the engine to transmission brace.
  20. Remove the starter. Refer to Starter Motor Replacement in Engine Electrical.

    21. Object Number: 105815 Size: SH
  21. Remove the transmission converter cover.
  22. Remove the heater core hose pipe brace to transmission nut and bolt.
  23. Remove the torque converter to flywheel bolts. Using a scribe, mark the flywheel to torque converter relationship in order to assure the proper reassembly. Refer to Flywheel to Torque Converter Bolt Replacement .
  24. Remove the oil level indicator and the fill tube. Refer to Filler Tube Replacement .
  25. Remove the transmission cooler pipes. Plug the pipes in order to prevent leakage. Refer to Automatic Transmission Oil Cooler Pipes Replacement .
  26. Remove the vehicle speed sensor. Refer to Vehicle Speed Sensor .
  27. Remove the vacuum reserve tank.
  28. Remove the position transmission jack.
  29. Remove the transmission mount to the body bolts. Refer to Transmission Mount Replacement .

    30. Object Number: 106171 Size: SH
  30. Remove the remaining engine to transmission bolts.
  31. Remove the transmission.
  32. Flush the transmission cooler and the lines with J 35944-A , or equivalent, whenever the transmission, the pump, the torque converter, or the case has been removed for overhaul or replacement.

Installation Procedure
  1. Place a thin film of chassis grease GM P/N 1051344 or the equivalent on the torque converter pilot hub.

    2. Properly seat the torque converter in the oil pump.

  2. Position the transmission in the vehicle.

    3. Object Number: 106171 Size: SH
  3. Install the lower engine to transmission bolts.
  4. Install the transmission mount to body bolts. Remove the transmission jack.
  5. Install the transmission cooler pipes. Refer to Automatic Transmission Oil Cooler Pipes Replacement .

    6. 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.

  6. Install the torque converter to flywheel bolts. Refer to Flywheel to Torque Converter Bolt Replacement .

    7. Tighten
    Tighten all of the bolts to 62 N·m (46 lb ft). Hand start and tighten the net slot bolt first. Hand start and tighten the two remaining bolts.

  7. Install the oil level indicator and the fill tube. Refer to Filler Tube Replacement .
  8. Install the vacuum reserve tank.
  9. Install the starter. Refer to Starter Motor Replacement in Engine Electrical.

    10. Object Number: 105815 Size: SH
  10. Install the transmission converter cover.
  11. Install the vehicle speed sensor. Refer to Vehicle Speed Sensor .
  12. Install the drive axles. Refer to Wheel Drive Shaft Replacement in Wheel Drive Shafts.
  13. Install the left suspension support assembly. Refer to Control Arm and/or Suspension Support in Front Suspension.
  14. Install the left stabilizer shaft frame bushing nuts. Refer to Stabilizer Shaft Replacement in Front Suspension.
  15. Install the stabilizer shaft link pin bolt. Refer to Stabilizer Shaft Link Replacement in Front Suspension.
  16. Install the engine to the transmission brace.
  17. Install both of the ball joints to the control arms. Refer to Lower Control Arm Ball Joint Replacement in Front Suspension.
  18. Connect the ABS wheel speed sensor harnesses. Refer to Wheel Speed Sensor Replacement in Antilock Brake System and Enhanced Traction System.
  19. Install the right and the left side splash shields.
  20. Install the heater core pipe brace to the transmission nut and the bolt.
  21. Install both of the tire and the wheel assemblies. Refer to Wheel Installation in Tires and Wheels.
  22. Lower the vehicle.

    23. Object Number: 106169 Size: SH
  23. Install the upper engine to transmission bolts.
  24. Install the shift linkage to the transmission.

    25. Object Number: 106168 Size: SH
  25. Install the following wire connectors:
    26. • The TCC connector
    • The Park/Neutral start and back-up lamp switch
  26. Install the wiring harness and the nut securing the harness to the transmission.

    27. Object Number: 104328 Size: SH
  27. Remove the J 28467-360 .
  28. Install the rubber hose to the transmission vent pipe.

    29. Object Number: 97313 Size: SH
  29. Install the vacuum modulator vacuum line.
  30. Install the air intake duct.
  31. Connect the negative battery cable.
  32. Refill the transmission with the proper fluid.
  33. Adjust the shift linkage.
  34. Inspect the oil level.
  35. Ensure that there are no oil leaks.