Drivetrain and Front Suspension Frame Front Crossmember Replacement (2500 4WD)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Lower Control Arm Crossmember, Front Crossmember Bolts & Nuts

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedures Raise the vehicle. Refer to Lifting and Jacking the Vehicle . Remove the oil pan skid plate. Refer to Oil Pan Skid Plate Replacement (1500 with RPO NZZ) , Oil Pan Skid Plate Replacement (2500/3500 with RPO NZZ) .
1	Engine Front Crossmember Nut (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 70 N.m (52 lb ft) Plus 110 degrees
2	Engine Front Crossmember Bolt (Qty: 2) Procedure 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).
3	Engine Front Crossmember Nut (Qty: 2) Tighten 70 N.m (52 lb ft) Plus 110 degrees
4	Engine Front Crossmember Bolt (Qty: 2) Procedure 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).
5	Lower Control Arm Crossmember