TSB: GMC BRAVADA, ENVOY, JIMMY, SONOMA (1999–2004)

Bulletin 3170C — Date unknown

Bulletin Details

Bulletin ID3170C
ManufacturerGMC
ModelsBRAVADA, ENVOY, JIMMY, SONOMA
Model Years1999–2004
Date Issued
Date Added to NHTSANovember 4, 2004
ComponentEXTERIOR LIGHTING:HEADLIGHTS
Vehicles Affected18 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

INSTRUMENT PANEL CLUSTER (IPC) INTERIOR AND/OR HEAD LAMPS FLICKER. *TC

Affected Vehicles

MakeModelYearComponent
GMC JIMMY 2004 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC SONOMA 2004 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC JIMMY 2003 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC SONOMA 2003 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC JIMMY 2002 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC SONOMA 2002 121000 EXTERIOR LIGHTING:HEADLIGHTS
OLDSMOBILE BRAVADA 2001 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC ENVOY 2001 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC JIMMY 2001 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC SONOMA 2001 121000 EXTERIOR LIGHTING:HEADLIGHTS
OLDSMOBILE BRAVADA 2000 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC ENVOY 2000 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC JIMMY 2000 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC SONOMA 2000 121000 EXTERIOR LIGHTING:HEADLIGHTS
OLDSMOBILE BRAVADA 1999 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC ENVOY 1999 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC JIMMY 1999 121000 EXTERIOR LIGHTING:HEADLIGHTS
GMC SONOMA 1999 121000 EXTERIOR LIGHTING:HEADLIGHTS

Related GMC Recalls

CampaignModelYearComponentSummary
SIERRA 3500 2019 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SIERRA 2500 2019 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SIERRA 1500 2018 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SIERRA 1500 2018 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SIERRA 2500 2019 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized GMC dealer. Bring this bulletin ID (3170C) 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.