November 6, 2012 Service bulletin

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

Chevrolet technical service bulletin PIT3665C for 2001-2004 Chevrolet Tahoe, 1999-2013 Chevrolet Silverado and 2001-2004 Chevrolet Suburban and others.

Bulletin number: PIT3665C
Component: Service brakes, hydraulic
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 6,803 complaints in the brakes category.

Vehicles covered

Chevrolet Tahoe 2001-2004 2001 2002 2003 2004
Chevrolet Silverado 1999-2013 2006 2007 2008 2009 2010 2011 2012 2013
Chevrolet Suburban 2001-2004 2001 2002 2003 2004
GMC Yukon 2001-2004 2001 2002 2003 2004
GMC Sierra 1999-2013 2006 2007 2008 2009 2010 2011 2012 2013
Chevrolet Astro 1998-2005 1998 1999 2000 2001 2002 2003 2004 2005
GMC Yukon XL 2001-2004 2001 2002 2003 2004
Chevrolet Avalanche 2002-2004 2002 2003 2004
Cadillac Escalade 2002-2004 2002 2003 2004
GMC Safari 1998-2005 1998 1999 2000 2001 2002 2003 2004 2005
GMC Yukon Denali 2001-2004 2001 2002 2003 2004
Chevrolet Express 1998-2013 2006 2007 2008 2009 2010 2011 2012 2013
Cadillac Escalade ESV 2003-2004 2003 2004
Chevrolet Pickup 1998 1998
GMC Yukon Denali XL 2004 2004
GMC Savana 1998-2013 2006 2007 2008 2009 2010 2011 2012 2013
Hummer H2 2003-2007 2003 2004 2005 2006 2007
GMC Sierra Denali 2007-2013 2007 2008 2009 2010 2011 2012 2013
GMC Pickup 1998 1998
Cadillac Escalade EXT 2002-2004 2002 2003 2004
GMC GM 2001-2002 2001 2002
GMC G Series 1999-2000, 2003 1999 2000 2003
GMC P 1998 1998

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