January 31, 2017 Service bulletin

This Preliminary Information communication advises the technician that the Hydro-Boost is not serviceable...

Chevrolet technical service bulletin PIT3665E for 2006-2011, 2014 Chevrolet Silverado 1500, 2001-2004 Chevrolet Tahoe and 1999-2017 Chevrolet Silverado and others.

Bulletin number: PIT3665E
Component: Service brakes, hydraulic: pedals and linkages
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 7,661 complaints in the brakes category.

Vehicles covered

Chevrolet Silverado 1500 2006-2011, 2014 2006 2007 2008 2009 2010 2011 2014
Chevrolet Tahoe 2001-2004 2001 2002 2003 2004
Chevrolet Silverado 1999-2017 2010 2011 2012 2013 2014 2015 2016 2017
Chevrolet Suburban 2001-2017 2010 2011 2012 2013 2014 2015 2016 2017
GMC Yukon 2001-2004 2001 2002 2003 2004
GMC Sierra 1999-2017 2010 2011 2012 2013 2014 2015 2016 2017
Chevrolet Astro 1998-2005 1998 1999 2000 2001 2002 2003 2004 2005
GMC Yukon XL 2001-2004 2001 2002 2003 2004
Cadillac Escalade 2002-2004 2002 2003 2004
GMC Safari 1998-2005 1998 1999 2000 2001 2002 2003 2004 2005
Chevrolet Silverado 3500 2013 2013
GMC Yukon Denali 2001-2004 2001 2002 2003 2004
Chevrolet Avalanche 1500 2002-2004 2002 2003 2004
Chevrolet Express 1998-2017 2010 2011 2012 2013 2014 2015 2016 2017
Cadillac Escalade ESV 2003-2004 2003 2004
GMC Yukon Denali XL 2004 2004
GMC Savana 1998-2014 2007 2008 2009 2010 2011 2012 2013 2014
Hummer H2 2003-2007 2003 2004 2005 2006 2007
Chevrolet Avalanche 2500 2002-2004 2002 2003 2004
Cadillac Escalade EXT 1500 2002-2004 2002 2003 2004
Chevrolet P 1998 1998

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