Installation Procedure
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Align the block tooth on the upper shaft to the 12 o'clock position (1).
- Install the wave washer (1) to the steering column upper shaft.
- A new SIR coil assembly will come pre-centered. However if centering is required, refer to Inflatable Restraint Steering Wheel Module Coil Centering in Steering Wheel and Column.
- Align the SIR coil (2) with the horn tower on the turn signal cancel cam (1)
- Install the pre-centered SIR coil (2) to the steering column upper shaft.
- Remove and discard the centering tab (1).
- Install the retaining ring (1). Verify that the ring (1) is firmly seated in the groove on the upper shaft (2).
- Install the wire harness assembly (4) into the wire strap (5).
- Install the wire harness strap (2) into the upper tilt head assembly (1).
- Install wire harness straps (3) to the wire harness assembly.
- Install the steering column trim covers. Refer to Steering Column Trim Covers Replacement in Steering Wheel and Column.
- Enable the SIR system. Refer to SIR Disabling and Enabling Zone 3 .
NOTE:
Ensure all fasteners are securely seated before applying needed torque. Failure to do so may result in component damage or malfunctioning of steering column.
IMPORTANT:
Do not remove the tab on the SIR coil until installation is complete.
NOTE:
Gently pull on the lower coil assembly wire in order to remove any wire kinks inside of the column assembly. Verify that there are NO kinks or bends in the SIR coil assembly wire. If a kink or bend is present, interference may occur with the shaft lock mechanism. Turning the steering wheel may cut or damage the wire.