Chevrolet Silverado / GMC Sierra. Manual — part 677

2. Rotate the coil hub clockwise until the coil ribbon stops.

3. Rotate the coil hub slowly, counterclockwise until the centering window appears

yellow (1) and both arrows (2) line up. This is the CENTER position.

4. While holding the coil hub in the CENTER position, align the SIR coil with the horn

tower and slide onto the steering shaft assembly.

3. If a double wire harness strap is installed onto the wire harness assembly and column, you

must route the wires up against the steering column. One wire harness strap will surround
one lead from the coil to the steering column. The other wire harness strap will surround all
other leads to the steering column.

INFLATABLE RESTRAINT INSTRUMENT PANEL MODULE REPLACEMENT

Fig. 19: Inflatable Restraint Instrument Panel Module Replacement
Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

2008 Chevrolet Silverado 1500

2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

INFLATABLE RESTRAINT FRONT PASSENGER POSITION SENSOR REPLACEMENT

Preliminary Procedures

1. Disable the supplemental inflatable restraint (SIR) system. Refer to SIR Disabling

and Enabling.

2. Remove instrument panel upper compartment assembly. Refer to Instrument Panel

Upper Compartment Replacement .

CAUTION:

Refer to SIR Caution .

1

Instrument Panel Inflatable Restraint Module Bolt (Qty: 4)

Tighten: 10 N.m (89 lb in)

NOTE:

Refer to Fastener Notice .

2

Instrument Panel Inflatable Restraint Module
Tip:

1. Using a plastic flat-bladed tool, pull up on module to disengage retainers.

2. Disconnect the electrical connectors.

3. Fully deploy the module before disposal. If the module was replaced

under warranty, fully deploy and dispose of the module after the required
retention period. Refer to Inflator Module Handling and Scrapping.

2008 Chevrolet Silverado 1500

2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 20: Inflatable Restraint Front Passenger Position Sensor Replacement
Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

Preliminary Procedures

1. Disable the supplemental inflatable restraint (SIR) system. Refer to SIR Disabling

and Enabling.

2. Remove the drivers seat. Refer to Front Seat Replacement - Bucket .

CAUTION:

Refer to SIR Caution .

1

Inflatable Restraint Seat Position Sensor Screw (Qty: 2)

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

INFLATABLE RESTRAINT PASSENGER PRESENCE SYSTEM REPLACEMENT - FRONT

Fig. 21: Inflatable Restraint Passenger Presence System Replacement - Front
Courtesy of GENERAL MOTORS CORP.

Tighten: 3 N.m (25 lb in)

2

Inflatable Restraint Position Sensor Assembly
Tip: Disconnect the electrical connector.

Callout

Component Name

Preliminary Procedure

1. Remove the front seat. Refer to Front Seat Replacement - Bucket .

2. Re-zero the inflatable restraint passenger presence system whenever the seat cushion

or any component of the passenger presence system is removed. Refer to Passenger

CAUTION:

Refer to SIR Caution .

2008 Chevrolet Silverado 1500

2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado