GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Blazer - 4WD 🢒 General Information 🢒 Vibration Diagnosis and Correction 🢒 Transmission Mount Replacement

Removal Procedure

    Object Number: 1342798 Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the transmission mount shield bolts, if equipped.
  3. Remove the transmission mount shield, if equipped.

    4. Object Number: 647997 Size: SH
  4. Support the transmission with a transmission jack.
  5. Remove the transmission mount to the transmission support retaining nut or nuts.
  6. Remove the transmission mount shield bracket, if equipped.

    7. Object Number: 702771 Size: SH
  7. Raise the transmission to take the weight off of the mount.
  8. Remove the transmission mount to the transmission or transfer case adapter mounting bolts (1).
  9. Raise the transmission just enough to remove the transmission mount.
  10. Remove the transmission mount from the vehicle.

Installation Procedure

    Object Number: 702771 Size: SH
  1. Install the transmission mount to the vehicle.

    2. 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.

  2. Install the transmission mount to the transmission or transfer case adapter mounting bolts (1).

    3. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 647997 Size: SH
  3. Lower the transmission.
  4. Install the transmission mount shield bracket, if equipped.
  5. Install the transmission mount to the transmission support retaining nut or nuts.

    6. Tighten
    Tighten the nut or nuts to 57 N·m (42 lb ft).

  6. Remove the transmission jack.

    7. Object Number: 1342798 Size: SH
  7. Install the transmission mount shield, if equipped.
  8. Install the transmission mount shield bolts, if equipped.

    9. Tighten

        • Tighten the transmission mount shield front bolts to 50 N·m (37 lb ft).
        • Tighten the transmission mount shield rear bolts to 33 N·m (24 lb ft).
  9. Lower the vehicle.