TSB: BUICK ACADIA, ATS, AVALANCHE, CAMARO, CANYON, CAPRICE, CAPTIVA, COLORADO, CORVETTE, CRUZE, CTS, ENCLAVE, ENCORE, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, EXPRESS, IMPALA, LACROSSE, LUCERNE, MALIBU, REGAL, SAVANA, SIERRA 2500, SIERRA DENALI, SILVERADO 2500, SILVERADO 3500, SONIC, SPARK, SRX, STS, SUBURBAN, TAHOE, TERRAIN, TRAVERSE, VERANO, VOLT, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2012–2013)

Bulletin 030846004M — November 9, 2012

Bulletin Details

Bulletin ID030846004M
ManufacturerBUICK
ModelsACADIA, ATS, AVALANCHE, CAMARO, CANYON, CAPRICE, CAPTIVA, COLORADO, CORVETTE, CRUZE, CTS, ENCLAVE, ENCORE, EQUINOX, ESCALADE, ESCALADE ESV, ESCALADE EXT, EXPRESS, IMPALA, LACROSSE, LUCERNE, MALIBU, REGAL, SAVANA, SIERRA 2500, SIERRA DENALI, SILVERADO 2500, SILVERADO 3500, SONIC, SPARK, SRX, STS, SUBURBAN, TAHOE, TERRAIN, TRAVERSE, VERANO, VOLT, XTS, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL
Model Years2012–2013
Date IssuedNovember 9, 2012
Date Added to NHTSADecember 21, 2017
ComponentELECTRICAL SYSTEM:SOFTWARE
Vehicles Affected77 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

This informational bulletin provides information on part restriction and ordering process information for onstar vehicle communication interface modules.

Affected Vehicles

MakeModelYearComponent
GMC ACADIA 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC ATS 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET AVALANCHE 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CAMARO 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CAPRICE 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CAPTIVA 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CORVETTE 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CRUZE 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC CTS 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
BUICK ENCLAVE 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
BUICK ENCORE 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET EQUINOX 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC ESCALADE 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC ESCALADE ESV 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC ESCALADE EXT 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET EXPRESS 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET IMPALA 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
BUICK LACROSSE 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET MALIBU 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
BUICK REGAL 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC SAVANA 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC SIERRA 2500 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC SIERRA DENALI 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SILVERADO 2500 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SILVERADO 3500 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SONIC 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SPARK 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC SRX 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SUBURBAN 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET TAHOE 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC TERRAIN 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET TRAVERSE 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
BUICK VERANO 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET VOLT 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC XTS 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC YUKON 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC YUKON DENALI 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC YUKON DENALI XL 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC YUKON XL 2013 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC ACADIA 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET AVALANCHE 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CAMARO 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC CANYON 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CAPRICE 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CAPTIVA 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET COLORADO 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CORVETTE 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET CRUZE 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC CTS 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
BUICK ENCLAVE 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET EQUINOX 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC ESCALADE 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC ESCALADE ESV 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC ESCALADE EXT 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET EXPRESS 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET IMPALA 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
BUICK LACROSSE 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
BUICK LUCERNE 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET MALIBU 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
BUICK REGAL 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC SAVANA 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC SIERRA 2500 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC SIERRA DENALI 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SILVERADO 2500 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SONIC 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC SRX 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CADILLAC STS 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET SUBURBAN 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET TAHOE 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC TERRAIN 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET TRAVERSE 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
BUICK VERANO 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
CHEVROLET VOLT 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC YUKON 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC YUKON DENALI 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC YUKON DENALI XL 2012 118000 ELECTRICAL SYSTEM:SOFTWARE
GMC YUKON XL 2012 118000 ELECTRICAL SYSTEM:SOFTWARE

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What Should You Do?

If your vehicle is affected by this TSB, contact your authorized BUICK dealer. Bring this bulletin ID (030846004M) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.