Yukon/Denali 2WD V8-4.8L VIN V (2005)
Fuse: All Technical Service Bulletins
OnStar(R) - System Inoperative/No LED Lamp ON
Bulletin No.: 04-08-46-005
Date: December 21, 2004
TECHNICAL
Subject:
OnStar(R) Generation 6 (Digital) System Inoperative/Has No Power, LED Light Not On (Remove/Reinstall OnStar(R) Fuse and Replace VCIM or
Follow SI Diagnostics)
Models:
2004-2005 Buick Rainier, Rendezvous
2005 Buick Allure (Canada), LaCrosse, LeSabre, Terrazza
2004-2005 Cadillac Escalade, Escalade ESV, Escalade EXT
2005 Cadillac CTS, DeVille
2004-2005 Chevrolet Avalanche, Silverado, Suburban, Tahoe, TrailBlazer, TrailBlazer EXT
2005 Chevrolet Colorado, Express, Impala, Monte Carlo, Uplander
2004-2005 GMC Denali, Denali XL, Envoy, Envoy XL, Envoy XUV, Sierra, Yukon, Yukon XL
2005 GMC Canyon, Savana
2004-2005 Pontiac Aztek
2005 Pontiac Bonneville, Grand Prix, Montana SV6, Vibe
with Digital Gen 6 OnStar(R) (RPO UE1)
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
Remove the OnStar(R) fuse from the fuse box, wait five minutes and reinstall the fuse. If the OnStar(R) system DOES NOT return to normal
functionality, then follow the diagnostics in SI for this condition.
If the OnStar(R) system DOES return to normal functionality, you will need to replace the VCIM. If the VCIM is not replaced, there is the possibility
that the customer will return to the dealership with the same conditions at a later date.
Please contact the GM Technical Assistance Center (TAC), to obtain a new VCIM. The TAC consultant will verify your diagnosis and, if appropriate,
order a replacement part. Replacement parts are usually shipped out within 24 hours, and a pre-paid return package label will be included for returning
the faulty part. By returning the faulty part, you will avoid a significant non-return core charge. After the VCIM has been replaced, press the blue
OnStar(R) button and request a full reconfiguration.
When contacting TAC regarding this concern, the availability of certain information from the vehicle will streamline the process for the dealership
technician as well as minimize the time necessary for TAC to provide the correct diagnosis. Please refer to Corporate Bulletin Number 01-00-89-011B
for further information concerning the information necessary before contacting TAC. Dealers in Canada should refer to GM Service Policies &
Procedures Section 5.3.1 "DEALER REQUIREMENTS FOR ASSISTANCE".
Warranty Information
