Chevrolet Silverado / GMC Sierra. Service manual — part 695

Fig. 77: Proper Transportation of Seat Belt Pretensioner
Courtesy of GENERAL MOTORS CORP.

1. Turn OFF the ignition.

2. Remove the ignition key.

3. Put on safety glasses.

4. Remove the seat belt pretensioner from the vehicle. Refer to Seat Belt Retractor

Pretensioner Replacement - Front (Regular Cab) or Seat Belt Retractor Pretensioner
Replacement - Front (Extended Cab) or Seat Belt Retractor Pretensioner
Replacement - Front (Crew Cab).

2008 Chevrolet Silverado 1500

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

Silverado

5. When carrying a seat belt pretensioner to the deployment area, keep fingers clear of the seat

belt webbing.

Fig. 78: Illustrating Proper Space For Deployment Of Pretensioner
Courtesy of GENERAL MOTORS CORP.

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

pretensioner. If possible, use a paved, outdoor location free of activity. Otherwise, use a
space free of activity on the shop floor. Make sure you have sufficient ventilation.

2008 Chevrolet Silverado 1500

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

Silverado

7. Make sure no loose or flammable objects are in the area.

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

9. Fill the fixture plastic reservoir with water or sand.

Fig. 79: Seat Belt Pretensioner And SIR Deployment Fixture
Courtesy of GENERAL MOTORS CORP.

10. Mount the seat belt pretensioner (1) in the SIR deployment fixture (3) with the open end

facing up using the following mounting method.

2008 Chevrolet Silverado 1500

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

Silverado

Adjust and secure the J 39401-B arms (4) to the deployment fixture.

To mount, use the proper size bolt (2) and nut (5) with washers in order to secure the
seat belt pretensioner (1) to the deployment fixture brackets.

Securely tighten all fasteners prior to deployment.

Fig. 80: Identifying SIR Deployment Harness & Adapter
Courtesy of GENERAL MOTORS CORP.

11. Inspect the J 38826 and the appropriate pigtail adapter for damage. Replace as needed.

12. Short the 2 SIR deployment harness (1) leads together using 1 banana plug seated into the

other.

13. Connect the appropriate pigtail adapter (2) to the SIR deployment harness.

2008 Chevrolet Silverado 1500

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

Silverado