GM Service Manual Online
For 1990-2009 cars only

Tools Required

    â€¢ J 28467-B (DW117) Universal Engine Support Fixture
    â€¢ DW 260-010 (DW260-010) Auto Transaxle Support Fixture

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1255963  Size: SH
  1. Position the select lever in the PARK position.
  2. Remove the battery.
  3. Remove the air filter housing and breather hose.
  4. Install the J 28467-B  (1) .

  5. Object Number: 1255968  Size: SH
  6. Disconnect the transaxle wiring harness from the transaxle
  7. Remove the park/neutral position switch electrical connector. Refer to Park/Neutral Position Switch Replacement .

  8. Object Number: 1255970  Size: SH
  9. Remove the upper transaxle-to-engine bolts.

  10. Object Number: 1255966  Size: SH
  11. Remove the left transaxle mounting bracket. Refer to Transmission Mount Bracket Replacement .
  12. Notice: Refer to Vehicle Lifting and Jacking Notice in the Preface section.


    Object Number: 1255932  Size: SH
  13. Raise and suitably support the vehicle.
  14. Remove the front engine crossbar.
  15. Remove the impact bar.
  16. Drain the transaxle fluid.
  17. Remove the oil cooler pipes from the transaxle. Refer to Transmission Fluid Cooler Hose/Pipe Replacement .

  18. Object Number: 1255972  Size: SH
  19. Remove the drive axles. Refer to Wheel Drive Shaft Inner Joint and Boot Replacement .
  20. Remove the flywheel to torque converter bolts.

  21. Object Number: 1255973  Size: SH
  22. Support the transaxle.
  23. Remove the front engine mounting bracket bolts and nuts.

  24. Object Number: 1255934  Size: SH
  25. Remove the rear transaxle mounting bracket bolts.

  26. Object Number: 1255936  Size: SH
  27. Using the DW 260-010  (1) or equivalent to support the transaxle assembly

  28. Object Number: 1255935  Size: SH
  29. Remove the lower engine-to-transaxle bolts.

  30. Object Number: 1255936  Size: SH
  31. Use the DW 260-010  (1) or equivalent to remove the transaxle assembly.

Installation Procedure

    Important: After installing the transmission assembly, the shift adapts must be reset. Reset the shift adapts using the scan tool. Go to Trans Adaptives Reset under Special Functions on the scan tool.


    Object Number: 1255936  Size: SH
  1. Install the transaxle into the vehicle.
  2. Use the DW 260-010  (1) or equivalent to support the transaxle assembly .
  3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1255937  Size: SH
  4. Install the lower engine-to-transaxle bolts.
  5. Tighten

        â€¢ Tighten the lower engine-to-transaxle bolts (1) to 75 N·m (55 lb ft).
        â€¢ Tighten the lower engine-to-transaxle bolts (2) to 21 N·m (15 lb ft).
        â€¢ Tighten the lower engine-to-transaxle bolts (3) to 31 N·m (23 lb ft).

    Object Number: 1255940  Size: SH
  6. Install the rear transaxle mounting bracket bolts.
  7. Tighten
    Tighten the rear transaxle mounting bracket bolts to 65 N·m (48 lb ft).


    Object Number: 1255941  Size: SH
  8. Install the front engine mounting bracket bolts and nuts.
  9. Tighten

        â€¢ Tighten the front engine mounting bracket bolts (1) to 90 N·m (66 lb ft).
        â€¢ Tighten the front engine mounting bracket bolts (2) to 80 N·m (59 lb ft).
        â€¢ Tighten the front engine mounting bracket bolts (3) to 65 N·m (48 lb ft).

    Object Number: 1255972  Size: SH
  10. Install the flywheel to torque converter bolts.
  11. Tighten
    Tighten the converter to flywheel bolts to 45 N·m (33 lb ft).

  12. Install the drive axle. Refer to Wheel Drive Shaft Inner Joint and Boot Replacement .

  13. Object Number: 1255932  Size: SH
  14. Install the oil cooler pipes from the transaxle. Refer to Transmission Fluid Cooler Hose/Pipe Replacement .
  15. Install the impact bar.
  16. Install the front engine cross-member.
  17. Lower the vehicle.

  18. Object Number: 1255942  Size: SH
  19. Install the left transaxle mounting bracket. Refer to Transmission Mount Bracket Replacement .

  20. Object Number: 1255943  Size: SH
  21. Install the upper transaxle-to-engine bolts.
  22. Tighten
    Tighten the upper transaxle-to-engine bolts to 75 N·m (55 lb ft).


    Object Number: 1255968  Size: SH
  23. Install the park/neutral position switch electrical connector.
  24. Connect the transaxle wiring harness to the transaxle.

  25. Object Number: 1255963  Size: SH
  26. Remove the J 28467-B  (1) .
  27. Install the air filter housing and breather tube.
  28. Install and connect the battery.
  29. Important: After installing the transmission assembly, the shift adapts must be reset. Reset the shift adapts using the scan tool. Go to Trans Adaptives Reset under Special Functions on the scan tool.

  30. Add the transaxle fluid. Refer to Transmission Fluid Level Inspection .