Transmission Support Crossmember Replacement (4WD 2500 Series)

Fig 1: View Of Transmission Crossmember, Crossmember Bolts & Nuts

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Support the transmission with a transmission jack.
1	Transmission Mount to Crossmember Nut (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 40 N.m (30 lb ft)
2	Transmission Crossmember Nut (Qty: 4) Tighten: 97 N.m (70 lb ft)
3	Transmission Crossmember Bolt (Qty: 4) Tip: Remove all traces of the original adhesive patch. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry. Apply threadlocker GM P/N 12345493 (Canadian P/N 10953488).
4	Transmission Crossmember