TSB: CADILLAC ASTRO, AVALANCHE 1500, DENALI, ESCALADE, ESCALADE ESV, ESCALADE EXT 1500, EXPRESS, H2, SAFARI, SAFARI (GMC), SAVANA, SIERRA 1500, SILVERADO 1500, SUBURBAN, TAHOE, YUKON, YUKON DENALI (1998–2016)

Bulletin PIT-3665-D — May 11, 2016

Bulletin Details

Bulletin IDPIT-3665-D
ManufacturerCADILLAC
ModelsASTRO, AVALANCHE 1500, DENALI, ESCALADE, ESCALADE ESV, ESCALADE EXT 1500, EXPRESS, H2, SAFARI, SAFARI (GMC), SAVANA, SIERRA 1500, SILVERADO 1500, SUBURBAN, TAHOE, YUKON, YUKON DENALI
Model Years1998–2016
Date IssuedMay 11, 2016
Date Added to NHTSAAugust 24, 2016
ComponentSERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
Vehicles Affected142 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 PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN THAT THE HYDRO-BOOST IS NOT SERVICEABLE AND WILL NEED TO BE REPLACED IF THE BRAKE PEDAL MOVES OR APPLIES ON ITS OWN AT A FULL TURN.

Affected Vehicles

MakeModelYearComponent
CHEVROLET EXPRESS 2016 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2016 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2016 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2016 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2015 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2015 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2015 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2015 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2014 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2014 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2014 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2014 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2013 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2013 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2013 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2013 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2012 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2012 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2012 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2012 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2011 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2011 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2011 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2011 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2010 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2010 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2010 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2010 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2009 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2009 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2009 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2009 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2008 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2008 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2008 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2008 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2007 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
HUMMER H2 2007 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2007 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2007 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2007 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2006 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
HUMMER H2 2006 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2006 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2006 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2006 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET ASTRO 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CADILLAC ESCALADE 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CADILLAC ESCALADE ESV 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CADILLAC ESCALADE EXT 1500 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
HUMMER H2 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI (GMC) 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SUBURBAN 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET TAHOE 2005 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET ASTRO 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET AVALANCHE 1500 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CADILLAC ESCALADE 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CADILLAC ESCALADE ESV 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CADILLAC ESCALADE EXT 1500 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
HUMMER H2 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI (GMC) 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SUBURBAN 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET TAHOE 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC YUKON 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC YUKON DENALI 2004 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET ASTRO 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET AVALANCHE 1500 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC DENALI 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CADILLAC ESCALADE 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CADILLAC ESCALADE ESV 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CADILLAC ESCALADE EXT 1500 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
HUMMER H2 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI (GMC) 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SUBURBAN 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET TAHOE 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC YUKON 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC YUKON DENALI 2003 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET ASTRO 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET AVALANCHE 1500 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC DENALI 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CADILLAC ESCALADE 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CADILLAC ESCALADE EXT 1500 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
HUMMER H2 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI (GMC) 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SUBURBAN 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET TAHOE 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC YUKON 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC YUKON DENALI 2002 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET ASTRO 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC DENALI 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CADILLAC ESCALADE 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI (GMC) 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SUBURBAN 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET TAHOE 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC YUKON 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC YUKON DENALI 2001 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET ASTRO 2000 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 2000 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI 2000 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI (GMC) 2000 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 2000 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 2000 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 2000 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET ASTRO 1999 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 1999 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI 1999 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI (GMC) 1999 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 1999 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 1999 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 1999 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET ASTRO 1998 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET EXPRESS 1998 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI 1998 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAFARI (GMC) 1998 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SAVANA 1998 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
GMC SIERRA 1500 1998 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES
CHEVROLET SILVERADO 1500 1998 031000 SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES

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What Should You Do?

If your vehicle is affected by this TSB, contact your authorized CADILLAC dealer. Bring this bulletin ID (PIT-3665-D) 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.