TSB: CHEVROLET AVALANCHE, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SUBURBAN, TAHOE, YUKON DENALI, YUKON XL (2007–2014)

Bulletin PIT4595J — May 10, 2021

Bulletin Details

Bulletin IDPIT4595J
ManufacturerCHEVROLET
ModelsAVALANCHE, SIERRA 1500, SIERRA 2500, SIERRA 3500, SILVERADO 1500, SILVERADO 2500, SUBURBAN, TAHOE, YUKON DENALI, YUKON XL
Model Years2007–2014
Date IssuedMay 10, 2021
Date Added to NHTSAJune 14, 2021
ComponentBRAKES (PWS)
Vehicles Affected78 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 PI communicates diagnostic tips to help dealership diagnosis a service trailer brake message with DTC C1114 and C1112.

Affected Vehicles

MakeModelYearComponent
GMC SIERRA 2500 2014 030000 BRAKES (PWS)
GMC SIERRA 2500 2014 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 2500 2014 030000 BRAKES (PWS)
CHEVROLET SILVERADO 2500 2014 110000 ELECTRICAL SYSTEM
CHEVROLET SUBURBAN 2014 110000 ELECTRICAL SYSTEM
CHEVROLET SUBURBAN 2014 030000 BRAKES (PWS)
CHEVROLET TAHOE 2014 030000 BRAKES (PWS)
CHEVROLET TAHOE 2014 110000 ELECTRICAL SYSTEM
GMC YUKON XL 2014 030000 BRAKES (PWS)
GMC YUKON XL 2014 110000 ELECTRICAL SYSTEM
CHEVROLET AVALANCHE 2013 030000 BRAKES (PWS)
CHEVROLET AVALANCHE 2013 110000 ELECTRICAL SYSTEM
GMC SIERRA 1500 2013 110000 ELECTRICAL SYSTEM
GMC SIERRA 1500 2013 030000 BRAKES (PWS)
CHEVROLET SILVERADO 1500 2013 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 1500 2013 030000 BRAKES (PWS)
CHEVROLET SUBURBAN 2013 030000 BRAKES (PWS)
CHEVROLET SUBURBAN 2013 110000 ELECTRICAL SYSTEM
CHEVROLET TAHOE 2013 110000 ELECTRICAL SYSTEM
CHEVROLET TAHOE 2013 030000 BRAKES (PWS)
GMC YUKON DENALI 2013 030000 BRAKES (PWS)
GMC YUKON DENALI 2013 110000 ELECTRICAL SYSTEM
CHEVROLET AVALANCHE 2012 030000 BRAKES (PWS)
CHEVROLET AVALANCHE 2012 110000 ELECTRICAL SYSTEM
GMC SIERRA 1500 2012 110000 ELECTRICAL SYSTEM
GMC SIERRA 1500 2012 030000 BRAKES (PWS)
CHEVROLET SILVERADO 1500 2012 030000 BRAKES (PWS)
CHEVROLET SILVERADO 1500 2012 110000 ELECTRICAL SYSTEM
CHEVROLET SUBURBAN 2012 030000 BRAKES (PWS)
CHEVROLET SUBURBAN 2012 110000 ELECTRICAL SYSTEM
CHEVROLET TAHOE 2012 030000 BRAKES (PWS)
CHEVROLET TAHOE 2012 110000 ELECTRICAL SYSTEM
GMC YUKON DENALI 2012 110000 ELECTRICAL SYSTEM
GMC YUKON DENALI 2012 030000 BRAKES (PWS)
CHEVROLET AVALANCHE 2011 030000 BRAKES (PWS)
CHEVROLET AVALANCHE 2011 110000 ELECTRICAL SYSTEM
GMC SIERRA 3500 2011 030000 BRAKES (PWS)
GMC SIERRA 3500 2011 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 1500 2011 030000 BRAKES (PWS)
CHEVROLET SILVERADO 1500 2011 110000 ELECTRICAL SYSTEM
CHEVROLET SUBURBAN 2011 110000 ELECTRICAL SYSTEM
CHEVROLET SUBURBAN 2011 030000 BRAKES (PWS)
CHEVROLET TAHOE 2011 030000 BRAKES (PWS)
CHEVROLET TAHOE 2011 110000 ELECTRICAL SYSTEM
GMC YUKON DENALI 2011 030000 BRAKES (PWS)
GMC YUKON DENALI 2011 110000 ELECTRICAL SYSTEM
CHEVROLET AVALANCHE 2010 110000 ELECTRICAL SYSTEM
CHEVROLET AVALANCHE 2010 030000 BRAKES (PWS)
GMC SIERRA 1500 2010 030000 BRAKES (PWS)
GMC SIERRA 1500 2010 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 1500 2010 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 1500 2010 030000 BRAKES (PWS)
CHEVROLET SUBURBAN 2010 030000 BRAKES (PWS)
CHEVROLET SUBURBAN 2010 110000 ELECTRICAL SYSTEM
CHEVROLET TAHOE 2010 110000 ELECTRICAL SYSTEM
CHEVROLET TAHOE 2010 030000 BRAKES (PWS)
GMC YUKON DENALI 2010 110000 ELECTRICAL SYSTEM
GMC YUKON DENALI 2010 030000 BRAKES (PWS)
CHEVROLET AVALANCHE 2009 110000 ELECTRICAL SYSTEM
CHEVROLET AVALANCHE 2009 030000 BRAKES (PWS)
GMC SIERRA 1500 2009 110000 ELECTRICAL SYSTEM
GMC SIERRA 1500 2009 030000 BRAKES (PWS)
CHEVROLET SILVERADO 1500 2009 030000 BRAKES (PWS)
CHEVROLET SILVERADO 1500 2009 110000 ELECTRICAL SYSTEM
CHEVROLET SUBURBAN 2009 110000 ELECTRICAL SYSTEM
CHEVROLET SUBURBAN 2009 030000 BRAKES (PWS)
CHEVROLET TAHOE 2009 110000 ELECTRICAL SYSTEM
CHEVROLET TAHOE 2009 030000 BRAKES (PWS)
GMC YUKON DENALI 2009 030000 BRAKES (PWS)
GMC YUKON DENALI 2009 110000 ELECTRICAL SYSTEM
GMC SIERRA 1500 2008 030000 BRAKES (PWS)
GMC SIERRA 1500 2008 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 1500 2008 030000 BRAKES (PWS)
CHEVROLET SILVERADO 1500 2008 110000 ELECTRICAL SYSTEM
GMC SIERRA 1500 2007 030000 BRAKES (PWS)
GMC SIERRA 1500 2007 110000 ELECTRICAL SYSTEM
CHEVROLET SILVERADO 1500 2007 030000 BRAKES (PWS)
CHEVROLET SILVERADO 1500 2007 110000 ELECTRICAL SYSTEM

Related CHEVROLET Recalls

CampaignModelYearComponentSummary
SILVERADO 3500 2019 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SILVERADO 2500 2019 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SILVERADO 1500 2018 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SILVERADO 1500 2018 AIR BAGS General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, ...
SILVERADO 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 CHEVROLET dealer. Bring this bulletin ID (PIT4595J) 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.