9-7X V8-5.3L (2005)
Models
Supercede:
This bulletin is being revised to add new information for the 2006 Impala/Monte Carlo. Please discard Corporate Bulletin Number 05-08-46-001B
(Section 08 - Body & Accessories).
Condition
Some customers may comment any or all of the following conditions:
The OnStar(R) system may be inoperative.
The OnStar(R) system may have no power.
The OnStar(R) LED light may not be on.
The technician may also not be able to communicate with the OnStar(R) Vehicle Communication Interface Module VCIM) with a Tech 2(R).
Correction
On 2006 Chevrolet Impala and Monte Carlo models, make sure the ignition is OFF prior to removing the OnStar(R) fuse. Disconnecting power to the
OnStar(R) module while the ignition is ON may discharge and permanently damage the OnStar(R) back-up battery.
This bulletin does NOT apply to 2006 vehicles built AFTER the VIN breakpoints listed above. Refer to applicable diagnostics in SI for those vehicles
that exhibit this condition.
Remove the OnStar(R) fuse from the fuse box, wait five minutes and reinstall the fuse. (For Saturn VUE vehicles, remove the "INT LTS" fuse from the
I/P fuse block for five minutes, then reinstall the fuse.) If the OnStar(R) system DOES NOT return to normal functionality, then follow the diagnostics in
SI for this condition.
