Preliminary Procedures

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
2. Remove the left engine splash shield. Refer to Engine Splash Shield Replacement .
3. Support the transmission with a transmission jack.

1

Transmission Mount Nut

Notice: Refer to Fastener Notice in the Preface section.

Tighten
60 N·m (44 lb ft)

Procedure

1. Remove and discard the front transmission mount nut.
2. Apply threadlocker GM P/N 12345382 (Canadian P/N 10953489) to the transmission mount threads.

Tip
The transmission mount nuts must be replaced once removed. When the nut has to be loosened or removed, threadlocker must be used in addition to using a new nut. Allow adhesive on new transmission mount nuts to cure for 24 hours after replacement.

2

Transmission Mount Nut

Tighten
75 N·m (55 lb ft)

Procedure

1. Remove and discard the front transmission mount nut.
2. Apply threadlocker GM P/N 12345382 (Canadian P/N 10953489) to the transmission mount threads.

Tip
The transmission mount nuts must be replaced once removed. When the nut has to be loosened or removed, threadlocker must be used in addition to using a new nut. Allow adhesive on new transmission mount nuts to cure for 24 hours after replacement.

3

Transmission Mount

Procedure

Using the transmission jack, lift the transmission just enough to gain clearance to remove the transmission mount from between the frame bracket and transmission mount bracket.