Installation Procedure

WARNING: In order to ensure the intended function of the steering column in a vehicle during a crash and in order to avoid personal injury to the driver, perform the following:

Tighten the steering column lower fasteners before you tighten the steering column upper fasteners. Failure to do this can damage the steering column.
Tighten the steering column fasteners to the specified torque. Overtightening the upper steering column fasteners could affect the steering column collapse.

Install the steering column to the vehicle.

Fig 1: Installing Steering Column To Vehicle
Courtesy of GENERAL MOTORS CORP.

CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Install the nuts to upper support brackets.
Tighten

Tighten the nuts to 30 N.m (22 lb ft).
Install the nuts (1) retaining the knee bolster deflector to the instrument panel.
Tighten

Tighten the retaining nuts to 9 N.m (80 lb in).

Fig 2: Installing Knee Bolster Deflector Nuts
Courtesy of GENERAL MOTORS CORP.
Install the wiring harness retaining (4) pin to the instrument panel.

Fig 3: Installing Wiring Harness Retaining Pin To Instrument Panel
Courtesy of GENERAL MOTORS CORP.
Connect the steering column electrical connectors to the vehicle wiring harness.
Tighten

Tighten the connector to 6 N.m (53 lb in).

Fig 4: Connecting Steering Column Electrical Connectors
Courtesy of GENERAL MOTORS CORP.
Connect the transmission shift cable (1) to the steering column.
Install the body control module bracket. Refer to Body Control Module Replacement in Body Control System .
Install the knee bolster. Refer to Knee Bolster Replacement - Left in Instrument Panel, Gages, and Console .
Enable the SIR system. Refer to ACTIVATING SYSTEM .

Fig 5: Connecting Transmission Shift Cable To Steering Column
Courtesy of GENERAL MOTORS CORP.
Remove J-42640 from the steering column.

Fig 6: Removing J-42640 From Steering Column
Courtesy of GENERAL MOTORS CORP.