GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the battery box. Refer to Battery Box Replacement.
  2. Remove the range selector cable bracket. Refer to Range Selector Lever Cable Bracket Replacement.
  3. Install the engine support fixture. Refer to Engine Support Fixture for the 3.5L LZ4 engine or Engine Support Fixture for the 3.6L LZ7 engine.
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.

  5. Object Number: 1875680  Size: SH
  6. Remove the front transmission mount thru bolt.

  7. Object Number: 1884515  Size: SH
  8. Remove the rear transmission mount thru bolt (1).
  9. Lower the vehicle.

  10. Object Number: 1875678  Size: SH
  11. Remove the transmission mount to transmission bolts.

  12. Object Number: 1884332  Size: SH
  13. Remove the transmission mount to frame rail bolts (2).
  14. Using the engine support, lower the transmission enough to provide clearance for the left transmission mount.
  15. Remove the left transmission mount (1).

Installation Procedure


    Object Number: 1884332  Size: SH
  1. Install the left transmission mount (1).
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the transmission mount to frame rail bolts (2).
  4. Tighten
    Tighten the bolts to 27 N·m (20 lb ft).

  5. Using the engine support, raise the transmission until the transmission contacts the left transmission mount.

  6. Object Number: 1875678  Size: SH
  7. Install the transmission mount to transmission bolts.
  8. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).

  9. Raise the vehicle.

  10. Object Number: 1884515  Size: SH
  11. Install the rear transmission mount thru bolt (1).
  12. Tighten
    Tighten the bolt to 110 N·m (81 lb ft).


    Object Number: 1875680  Size: SH
  13. Install the front transmission mount thru bolt.
  14. Tighten
    Tighten the bolt to 110 N·m (81 lb ft).

  15. Lower the vehicle.
  16. Remove the engine support fixture.
  17. Install the range selector cable bracket. Refer to Range Selector Lever Cable Bracket Replacement.
  18. Install the battery box. Refer to Battery Box Replacement.