November 1, 2011 Service bulletin

Cadillac/chevrolet/gmc/hummer: some suvs and trucks are exhibiting a condition where by...

Chevrolet technical service bulletin PIP-3366-B for 2004-2012 Chevrolet Tahoe, 2004-2012 Chevrolet Silverado and 2004-2005 Chevrolet Blazer and others.

Bulletin number: PIP-3366-B
Component: Power train: automatic transmission
Summary: Cadillac/chevrolet/gmc/hummer: some suvs and trucks are exhibiting a condition where by grinding/ratcheting type noise coming from automatic transmission when shifting into park while in 4wd low (4lo) range.

Owners of these vehicles have filed 851 complaints in the transmission category.

Vehicles covered

Chevrolet Tahoe 2004-2012 2005 2006 2007 2008 2009 2010 2011 2012
Chevrolet Silverado 2004-2012 2005 2006 2007 2008 2009 2010 2011 2012
Chevrolet Blazer 2004-2005 2004 2005
Chevrolet Trailblazer 2004-2007 2004 2005 2006 2007
Chevrolet S10 2004-2007 2004 2005 2006 2007
GMC Sierra 2004-2012 2005 2006 2007 2008 2009 2010 2011 2012
Chevrolet Colorado 2004-2012 2005 2006 2007 2008 2009 2010 2011 2012
GMC Jimmy 1999-2004 1999 2000 2001 2002 2003 2004
GMC Envoy 2004-2009 2004 2005 2006 2007 2008 2009
Chevrolet Avalanche 2004-2010 2004 2005 2006 2007 2008 2009 2010
GMC Canyon 2004-2012 2005 2006 2007 2008 2009 2010 2011 2012
GMC Sonoma 1999-2005 1999 2000 2001 2002 2003 2004 2005
Chevrolet Silverado Classic 2004-2007 2004 2005 2006 2007
GMC Sierra Classic 2004-2007 2004 2005 2006 2007

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