Sierra Classic 2500 4WD V8-6.0L (2007)
1. Install the crossmember to the vehicle.
2. Perform the following procedure before installing the bolts.
1. Remove all traces of the original adhesive patch.
2. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry.
3. Apply threadlocker GM P/N 12345493 (Canadian P/N 10953488).
Notice: Refer to Fastener Notice .
3. Install the bolts retaining the crossmember to the frame.
Tighten the crossmember retaining bolts to 120 N.m (88 lb ft).
4. Install the differential carrier shield. Refer to Shield Replacement .
5. Lower the vehicle.
Transmission Support Replacement
