Chevrolet Silverado / GMC Sierra. Service manual — part 683

period.

Special Tools

J 39401-B SIR Deployment Fixture

J 38826 SIR Deployment Harness

An appropriate pigtail adapter

1. Turn OFF the ignition.

2. Remove the ignition key.

3. Put on safety glasses.

4. Remove the inflator module.

If you are removing the steering wheel module, refer to Inflatable Restraint
Steering Wheel Module Replacement.

If you are removing the I/P module, refer to Inflatable Restraint Instrument Panel
Module Replacement.

If you are removing a roof rail module, refer to Inflatable Restraint Roof Side Rail
Module Replacement (Crew Cab) or Inflatable Restraint Roof Side Rail
Module Replacement (Extended Cab) or Inflatable Restraint Roof Side Rail
Module Replacement (Regular Cab).

CAUTION: In order to prevent accidental deployment and the risk of

personal injury, do not dispose of an undeployed inflator
module as normal shop waste. Undeployed inflator modules
contain substances that could cause severe illness or
personal injury if their sealed containers are damaged during
disposal. Use the following deployment procedures to safely
dispose of an undeployed inflator module. Failure to observe
the following disposal methods may be a violation of federal,
state, or local laws.

CAUTION: Refer to SIR Inflator Module Handling and Storage

Caution .

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 30: Illustrating Proper Storage Of Inflator Module
Courtesy of GENERAL MOTORS CORP.

5. Place the inflator module on a work bench, with the vinyl trim cover facing up and away

from the surface.

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 31: Clearance For Deployment Of Inflator Module
Courtesy of GENERAL MOTORS CORP.

6. Clear a space on the ground about 1.85 m (6 ft) in diameter for deployment of the inflator

module or deployment fixture. If possible, use a paved, outdoor location free of activity.
Otherwise, use a space free of activity on the shop floor. Ensure you have sufficient
ventilation.

7. Clear the area of loose or flammable objects.

8. If you are deploying a steering wheel inflator module, place the inflator module in the

center of the space.

IMPORTANT: Dual stage deployments are only used in steering wheel and

I/P inflator modules. If stage 1 was used to deploy a dual
stage inflator module, stage 2 may still be active. If disposal
of a dual stage module is required, both deployment loops
must be energized to deploy the air bag.

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 32: Identifying I/P Module Components
Courtesy of GENERAL MOTORS CORP.

9. When deploying an I/P inflator module, perform the following instructions:

1. Place the J 39401-B in the center of the cleared area.

2. Fill the deployment fixture with water or sand.

3. Using the proper nuts and bolts, mount the I/P module (1) to the deployment fixture

(2), with the vinyl trim facing up.

2008 Chevrolet Silverado 1500

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

Silverado