June 24, 2019 Service bulletin

Service brakes

Chevrolet technical service bulletin PIT3665H for 1998-2019 Chevrolet Silverado 1500, 2001-2004 Chevrolet Tahoe and 1998-2019 GMC Sierra 1500 and others.

Bulletin number: PIT3665H
Component: Service brakes
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.

Owners of these vehicles have filed 10,001 complaints in the brakes category.

Vehicles covered

Chevrolet Silverado 1500 1998-2019 2012 2013 2014 2015 2016 2017 2018 2019
Chevrolet Tahoe 2001-2004 2001 2002 2003 2004
GMC Sierra 1500 1998-2019 2012 2013 2014 2015 2016 2017 2018 2019
Chevrolet Silverado 2017 2017
Chevrolet Suburban 2001-2004, 2016-2019 2001 2002 2003 2004 2016 2017 2018 2019
GMC Yukon 2001-2004 2001 2002 2003 2004
Chevrolet Silverado 2500 1998-2000, 2002-2019 2012 2013 2014 2015 2016 2017 2018 2019
GMC Sierra 2017 2017
Chevrolet Astro 1998-2005 1998 1999 2000 2001 2002 2003 2004 2005
GMC Sierra 2500 1998-2019 2012 2013 2014 2015 2016 2017 2018 2019
Cadillac Escalade 2001-2004 2001 2002 2003 2004
GMC Safari 1998-2005 1998 1999 2000 2001 2002 2003 2004 2005
Chevrolet Silverado 3500 1998-2019 2012 2013 2014 2015 2016 2017 2018 2019
Chevrolet Avalanche 1500 2002-2004 2002 2003 2004
Chevrolet Express 1998-2019 2012 2013 2014 2015 2016 2017 2018 2019
GMC Sierra 3500 1998-2019 2012 2013 2014 2015 2016 2017 2018 2019
GMC Savana 1998-2019 2012 2013 2014 2015 2016 2017 2018 2019
Hummer H2 2003-2007 2003 2004 2005 2006 2007

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