Installation Procedure
- Record the 11-digit ESN number from the label on the new part.
- Install the VCU to the bracket.
- Connect the electrical connectors to the VCU.
- Refer to Fastener Notice
.
Install the screw.
Tighten
Tighten the screw to 9 N.m (80 lb in).
- Install the I/P cluster harness.
- Install the I/P trim panel. Refer to Instrument Panel Upper Trim Pad Replacement .
- Reconfigure the OnStar® system. Refer to OnStar Reconfiguration (Without TIS 2 Web Gen.3 and prior) .
NOTE:
In order to avoid damage to the circuit board, do NOT over-tighten the thumb screws. Using your fingers, apply only a light pressure.
IMPORTANT:
After replacing the VCU, you must reconfigure the OnStar® system. Failure to reconfigure the system will result in an additional customer visit for repair.