OnStar (R) Vehicle Interface Unit (VIU) Replacement

REMOVAL PROCEDURE




1. Remove the dash trim bezel.
2. Remove the garnish molding on the windshield pillar.
3. Remove the dash trim pad.
4. Remove the screws (2) securing the VIU bracket to the instrument panel metal brace.




5. Disconnect the red 32-way electrical connectors (1) and the blue 32-way electrical connector (2).




6. Disconnect the microphone (1) and global position system (GPS) cables (2) from the VIU.




7. Remove the VIU (2) from the bracket by rotating the module upwards to release the hook tab (1).

INSTALLATION PROCEDURE




1. Install the VIU (2) to the bracket by rotating downwards into the hook tab (1).




2. Reconnect the microphone (1) and GPS cables (2) from the VIU.




3. Reconnect the red 32-way; electrical connectors (1) and the blue 32-way electrical connector (2).

NOTE: Refer to Fastener Notice in Cautions and Notices.




4. Install the screw (2) securing the VIU bracket to the instrument panel metal brace.

Tighten
Tighten the screw to 9 N.m (80 lb in).

5. Install the dash trim pad.
6. Install the garnish molding on the windshield pillar.
7. Install the dash trim bezel.
8. Reprogram the VIU when replacing only.