Hummer H2. Manual — part 222

5. Reconfigure the OnStar(R) system. Refer to OnStar Reconfiguration .

ONSTAR(R) MICROPHONE REPLACEMENT

Removal Procedure

Fig. 18: OnStar(R) Microphone Bezel & Headliner
Courtesy of GENERAL MOTORS CORP.

1. Twist and remove the OnStar microphone bezel from the headliner.

reconfigure the OnStar(R) system. Failure to reconfigure the system will
result in an additional customer visit for repair. In addition, pressing and
holding the white dot button on the keypad will NOT reset this version of
the OnStar(R) system. This action will cause a DTC to set.

2004 Hummer H2

2004 ACCESSORIES & EQUIPMENT Cellular Communication - Hummer H2

Fig. 19: Microphone Connector & Jumper Harness
Courtesy of GENERAL MOTORS CORP.

2. Disconnect the microphone connector from the jumper harness.

Installation Process

2004 Hummer H2

2004 ACCESSORIES & EQUIPMENT Cellular Communication - Hummer H2

Fig. 20: Microphone Connector & Jumper Harness
Courtesy of GENERAL MOTORS CORP.

1. Connect the electrical connection to the OnStar microphone.

2004 Hummer H2

2004 ACCESSORIES & EQUIPMENT Cellular Communication - Hummer H2

Fig. 21: OnStar(R) Microphone Bezel & Headliner
Courtesy of GENERAL MOTORS CORP.

2. Mount the OnStar(R) microphone and bezel to the headliner.

3. Check OnStar(R) microphone for proper operation.

DESCRIPTION AND OPERATION

ONSTAR(R) DESCRIPTION AND OPERATION

This vehicle uses either the Generation 5 or Generation 6 version of the OnStar(R) system. These systems
consist of the following components:

z

Vehicle communication interface module (VCIM)

z

OnStar(R) button assembly

z

Microphone

z

Cellular antenna

z

Navigation antenna

This system also interfaces with the factory installed vehicle audio system.

2004 Hummer H2

2004 ACCESSORIES & EQUIPMENT Cellular Communication - Hummer H2