GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 Envoy XUV 🢒 General Information 🢒 Vibration Diagnosis and Correction 🢒 Transmission Mount Replacement

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
  4. Remove the transmission support from the vehicle. Refer to Transmission Support Replacement .

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

    6. Object Number: 1334965 Size: SH
  6. Remove the transmission mount to the exhaust hanger mounting bolt.
  7. Separate the transmission mount from the exhaust hanger.
  8. 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.

  2. Install the bolt that secures the transmission mount to the exhaust hanger bracket.

    3. Tighten
    Tighten the bolt to 30 N·m (22 lb ft).


    Object Number: 745754 Size: SH
  3. Install the transmission mount.
  4. Install the bolts (1, 2) securing the transmission mount to the transmission.

    5. 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 .

    6. Object Number: 744176 Size: SH
  6. Remove the transmission jack.
  7. Install the nuts securing the transmission mount to the transmission support.

    8. Tighten
    Tighten the nuts to 46 N·m (35 lb ft).

  8. 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 .
  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
  4. Remove the transmission support from the vehicle. Refer to Transmission Support Replacement .

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

    6. Object Number: 1293472 Size: SH
  6. 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
  2. Install the bolts (1, 2) securing the transmission mount to the transmission.

    3. Tighten
    Tighten the bolts to 65 N·m (48 lb ft).


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

    4. Object Number: 744176 Size: SH
  4. Remove the transmission jack.
  5. Install the nuts securing the transmission mount to the transmission support.

    6. Tighten
    Tighten the nuts to 46 N·m (35 lb ft).

  6. Lower the vehicle.