Hummer H2. Manual — part 2043

Fig. 43: Identifying Upper Trim Cover
Courtesy of GENERAL MOTORS CORP.

7. Remove 2 TORX(R) head screws (2) from the upper trim cover (1).

8. Remove the upper trim cover (1).

2004 Hummer H2

2004 RESTRAINTS SIR - Hummer H2

Fig. 44: Identifying SIR Coil
Courtesy of GENERAL MOTORS CORP.

9. Remove the wire harness straps from the steering wheel column wire harness.

10. Remove the retaining ring (3).

11. Remove the SIR coil (4) from the steering shaft.

12. If replacing, discard the SIR coil.

Installation Procedure

NOTE:

The new SIR coil assembly will be centered. Improper alignment of the SIR

2004 Hummer H2

2004 RESTRAINTS SIR - Hummer H2

Fig. 45: Block Tooth Of Steering Shaft Assembly In 12 O'clock Position
Courtesy of GENERAL MOTORS CORP.

1. Verify the following:

z

The wheels on the vehicle are straight ahead.

coil assembly may damage the unit, causing an inflatable restraint
malfunction.

NOTE:

The wheels of the vehicle must be straight ahead and the steering column
in the LOCK position before disconnecting the steering column or
intermediate shaft from the steering gear. Failure to do so will cause the
SIR coil assembly to become uncentered, which may cause damage to the
coil assembly.

2004 Hummer H2

2004 RESTRAINTS SIR - Hummer H2

z

That J 42640 is installed or the ignition switch is in the LOCK position.

Fig. 46: SIR Coil
Courtesy of GENERAL MOTORS CORP.

2. If reusing the existing coil it MUST be centered, refer to Inflatable Restraint Steering Wheel Module

Coil Centering in Steering Wheel and Column.

IMPORTANT: Do not remove the centering tab from the new SIR coil until the

installation is complete. If the SIR coil does not come with a centering tab,
you must center the SIR coil.

2004 Hummer H2

2004 RESTRAINTS SIR - Hummer H2