Sierra 3500 Denali 4WD V8-6.0L (2011)
Clockspring Assembly / Spiral Cable: Procedures
Inflatable Restraint Steering Wheel Module Coil Centering
Caution: The new SIR coil assembly will be centered. Improper alignment of the SIR coil assembly may damage the unit, causing an inflatable
restraint malfunction.
1. Verify the following conditions before centering the SIR coil:
*
The front wheels of the vehicle are in the straight ahead position.
*
The block tooth (1) of the steering shaft assembly is in the 12 o'clock position.
*
The ignition switch is in the LOCK position.
Note: If a double wire harness strap is installed onto the wire harness assembly and the column, you must reuse the holder for the wire straps
during the installation.
2. Remove the wire harness strap or straps where necessary.
3. Hold the SIR coil and look at the side with the letters POM (1).
4. Rotate the coil hub clockwise until the coil ribbon stops.
Caution: Do not rotate the SIR coil more than 3 turns counterclockwise from the center position. There is no stop in the counterclockwise
direction. Rotating the SIR coil more than 3 turns counterclockwise from the center position will damage the SIR coil, causing an inflatable
restraint malfunction.
5. From the clockwise stop, rotate the coil hub slowly counterclockwise approximately 3.3 turns. Place the uplead connector (2) in the 12 o'clock
position. Ensure the flat wire cable loop appears in the centering window (4). This is the CENTER position.
6. If you have the orange lock pin (3), use the lock pin to lock the SIR coil in the center position.
If you do not have the orange lock pin, hold the SIR coil in the center position.
