GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 43405 Engine Support Fixture Adapter
    • SA9105E Engine Support Fixture

Removal Procedure

  1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .

  2. Object Number: 952023  Size: SH
  3. L61 vehicles only, Install theSA9105E andJ 43405 .
  4. L81 vehicles only, Support the powertrain using the floor jack with 2 in x 6 in wood block placed under the oil pan.

  5. Object Number: 928641  Size: SH
  6. Remove the mount to mount bracket bolts.

  7. Object Number: 928650  Size: SH
  8. Remove the mount to frame rail nuts.
  9. Remove the mount.

Installation Procedure


    Object Number: 928651  Size: SH

    Important: On the V6 vehicles install 1 spacer onto each frame rail stud.

  1. Install the mount onto the frame rail studs.
  2. Install the mount to frame rail nuts and tighten.
  3. Tighten
    Tighten the mount-to-frame rail nuts to 110 N·m (81 lb ft).


    Object Number: 928641  Size: SH
  4. Hand start all the mount-to-bracket-bolts. Reposition the powertrain as required to allow all the bolts to hand start.
  5. Beginning with the center bolt tighten the mount-to-bracket bolts.
  6. Tighten
    Tighten the mount-to-bracket-bolts to 50 N·m (37 lb ft).

  7. Remove the SA9105E and the J 43405 , or floor jack.
  8. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  9. Start the engine and observe the idle shake. Compare to the pre-removal condition, if excessive perform powertrain balance procedure Operation No.1. Refer to Engine and Transmission Mount Balancing - All Mounts .