TSB: BUICK ACADIA, AURA, AVALANCHE, CTS, EQUINOX, ESCALADE EXT, EXPRESS, G6, IMPALA, MALIBU, OUTLOOK, REGAL, SAVANA, SIERRA 2500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SONIC, SRX, SUBURBAN, TAHOE, TERRAIN, TRAVERSE, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL (2006–2015)
Bulletin 10-08-42-001E — May 15, 2015
Bulletin Details
| Bulletin ID | 10-08-42-001E |
| Manufacturer | BUICK |
| Models | ACADIA, AURA, AVALANCHE, CTS, EQUINOX, ESCALADE EXT, EXPRESS, G6, IMPALA, MALIBU, OUTLOOK, REGAL, SAVANA, SIERRA 2500, SIERRA DENALI, SILVERADO 1500, SILVERADO 2500, SILVERADO 3500, SONIC, SRX, SUBURBAN, TAHOE, TERRAIN, TRAVERSE, YUKON, YUKON DENALI, YUKON DENALI XL, YUKON XL |
| Model Years | 2006–2015 |
| Date Issued | May 15, 2015 |
| Date Added to NHTSA | August 15, 2017 |
| Component | EXTERIOR LIGHTING:HEADLIGHTS |
| Vehicles Affected | 161 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 technical bulletin provides repair information for low beam headlamp bulb diagnosis/replacement to correct a customer concern that the low beam headlamp is inoperative.
Affected Vehicles
| Make | Model | Year | Component |
|---|---|---|---|
| CHEVROLET | EQUINOX | 2015 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | IMPALA | 2015 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | MALIBU | 2015 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | TERRAIN | 2015 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | CTS | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | EQUINOX | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | IMPALA | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | MALIBU | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| BUICK | REGAL | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA 2500 | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 2500 | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SONIC | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SUBURBAN | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | TAHOE | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | TERRAIN | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON XL | 2014 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | AVALANCHE | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | CTS | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | EQUINOX | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | EXPRESS | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | IMPALA | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | MALIBU | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| BUICK | REGAL | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SAVANA | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 2500 | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 3500 | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SONIC | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | SRX | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SUBURBAN | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | TAHOE | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | TERRAIN | 2013 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | ACADIA | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | AVALANCHE | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | CTS | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | EQUINOX | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | EXPRESS | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | IMPALA | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | MALIBU | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| BUICK | REGAL | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SAVANA | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA 2500 | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA DENALI | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 2500 | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SONIC | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | SRX | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SUBURBAN | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | TAHOE | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | TERRAIN | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | TRAVERSE | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON DENALI | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON DENALI XL | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON XL | 2012 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | ACADIA | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | AVALANCHE | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | CTS | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | EQUINOX | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | EXPRESS | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | IMPALA | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | MALIBU | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| BUICK | REGAL | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SAVANA | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA 2500 | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA DENALI | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 1500 | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 2500 | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | SRX | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SUBURBAN | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | TAHOE | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | TERRAIN | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | TRAVERSE | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON DENALI | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON DENALI XL | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON XL | 2011 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | ACADIA | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| SATURN | AURA | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | AVALANCHE | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | CTS | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | EQUINOX | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | ESCALADE EXT | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | EXPRESS | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| PONTIAC | G6 | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | IMPALA | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | MALIBU | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| SATURN | OUTLOOK | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SAVANA | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA 2500 | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA DENALI | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 1500 | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 2500 | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | SRX | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SUBURBAN | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | TAHOE | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | TERRAIN | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | TRAVERSE | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON DENALI | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON DENALI XL | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON XL | 2010 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | ACADIA | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| SATURN | AURA | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | AVALANCHE | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | CTS | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | EXPRESS | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| PONTIAC | G6 | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | IMPALA | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | MALIBU | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| SATURN | OUTLOOK | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SAVANA | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA 2500 | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA DENALI | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 1500 | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 2500 | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SUBURBAN | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | TAHOE | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | TRAVERSE | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON DENALI | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON DENALI XL | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON XL | 2009 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | ACADIA | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| SATURN | AURA | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | AVALANCHE | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | CTS | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | EXPRESS | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| PONTIAC | G6 | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | IMPALA | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | MALIBU | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| SATURN | OUTLOOK | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SAVANA | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA 2500 | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA DENALI | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 1500 | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 2500 | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SUBURBAN | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | TAHOE | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON DENALI | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON DENALI XL | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON XL | 2008 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | ACADIA | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| SATURN | AURA | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | AVALANCHE | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CADILLAC | ESCALADE EXT | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| PONTIAC | G6 | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | IMPALA | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| SATURN | OUTLOOK | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA 2500 | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | SIERRA DENALI | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 1500 | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SILVERADO 2500 | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | SUBURBAN | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | TAHOE | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON DENALI | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON DENALI XL | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| GMC | YUKON XL | 2007 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| PONTIAC | G6 | 2006 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
| CHEVROLET | IMPALA | 2006 | 121000 EXTERIOR LIGHTING:HEADLIGHTS |
Related BUICK Recalls
What Should You Do?
If your vehicle is affected by this TSB, contact your authorized BUICK dealer. Bring this bulletin ID (10-08-42-001E) 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.