GM Service Manual Online
For 1990-2009 cars only

Transmission Mount Replacement 4.2L

Removal Procedure


    Object Number: 744176  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Support the transmission with a suitable jack.
  3. Remove the nuts securing the transmission mount to the transmission support.

  4. Object Number: 752134  Size: SH
  5. Remove the transmission support from the vehicle. Refer to Transmission Support Replacement .

  6. Object Number: 745754  Size: SH
  7. Remove the transmission mount bolts (1, 2).

  8. Object Number: 1334965  Size: SH
  9. Remove the transmission mount to the exhaust hanger mounting bolt.
  10. Separate the transmission mount from the exhaust hanger.
  11. Remove the transmission mount.

Installation Procedure


    Object Number: 1334965  Size: SH
  1. Install the transmission mount to the exhaust hanger bracket.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the bolt that secures the transmission mount to the exhaust hanger bracket.
  4. Tighten
    Tighten the bolt to 30 N·m (22 lb ft).


    Object Number: 745754  Size: SH
  5. Install the transmission mount.
  6. Install the bolts (1, 2) securing the transmission mount to the transmission.
  7. Tighten
    Tighten the bolts to 65 N·m (48 lb ft).


    Object Number: 752134  Size: SH
  8. Install the transmission support to the vehicle. Refer to Transmission Support Replacement .

  9. Object Number: 744176  Size: SH
  10. Remove the transmission jack.
  11. Install the nuts securing the transmission mount to the transmission support.
  12. Tighten
    Tighten the nuts to 46 N·m (35 lb ft).

  13. Lower the vehicle.

Transmission Mount Replacement 5.3L

Removal Procedure


    Object Number: 744176  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Support the transmission with a suitable jack.
  3. Remove the nuts securing the transmission mount to the transmission support.

  4. Object Number: 752134  Size: SH
  5. Remove the transmission support from the vehicle. Refer to Transmission Support Replacement in Frame and Underbody.

  6. Object Number: 1293735  Size: SH
  7. Remove the transmission mount bolts (1, 2).

  8. Object Number: 1293472  Size: SH
  9. Remove the transmission mount from the vehicle.

Installation Procedure


    Object Number: 1293472  Size: SH
  1. Install the transmission mount.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1293735  Size: SH
  3. Install the bolts (1, 2) securing the transmission mount to the transmission.
  4. Tighten
    Tighten the bolts to 65 N·m (48 lb ft).


    Object Number: 752134  Size: SH
  5. Install the transmission support to the vehicle. Refer to Transmission Support Replacement in Frame and Underbody.

  6. Object Number: 744176  Size: SH
  7. Remove the transmission jack.
  8. Install the nuts securing the transmission mount to the transmission support.
  9. Tighten
    Tighten the nuts to 46 N·m (35 lb ft).

  10. Lower the vehicle.