Installation Procedure

Install the tie rods to the crossmember. Refer to Tie Rod Replacement (Front Wheel Drive) or Tie Rod Replacement (All Wheel Drive) in Rear Suspension.
Install the rear axle lower control arms onto the rear crossmember. Refer to Rear Axle Lower Control Arm Replacement (All Wheel Drive) in Rear Suspension.
Install the rear axle upper control arms onto the rear crossmember. Refer to Rear Axle Upper Control Arm Replacement (All Wheel Drive) in Rear Suspension.
Install the rear stabilizer shaft onto the rear crossmember. Refer to Stabilizer Shaft Replacement (All Wheel Drive) in Rear Suspension.

Fig 1: View Of Rear Crossmember

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Tighten the mounting bolts.
Tighten: Tighten the rear crossmember mounting bolts to 130 N.m (96 lb ft).
Install the ALC height sensor onto the crossmember and lower control arm. Refer to Automatic Level Control Sensor Replacement in Automatic Level Control.

Fig 2: View Of Rear Differential Carrier Mounting Bolts

Courtesy of GENERAL MOTORS CORP.

Install the rear differential carrier mounting bolts (5). Refer to Differential Replacement in Rear Drive Axle.
Attach the parking brake cable onto the rear crossmember. Refer to Park Brake Cable Replacement - Left Rear (Disc) or Park Brake Cable Replacement - Left Rear (Drum) and Park Brake Cable Replacement - Right Rear (Disc) or Park Brake Cable Replacement - Right Rear (Drum) in Park Brake.
Connect the wheel speed sensor harness onto the rear crossmember and the lower control arm.
Install the rear suspension knuckle. Refer to Knuckle Replacement (All Wheel Drive) in Rear Suspension.
Install the tire and the wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
Lower the vehicle.
Inspect for rear alignment and adjust as necessary. Refer to Measuring Wheel Alignment in Wheel Alignment.