The HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block.

This Part Fits:

Year	Make	Model	Submodel
2001-2004	Avanti	II	Base
2008-2009	Buick	LaCrosse	Super
2004-2007	Buick	Rainier	CXL
2004-2007	Cadillac	CTS	V
2002-2005	Cadillac	Escalade	Base
2007-2012	Chevrolet	Avalanche	LS
2007-2012	Chevrolet	Avalanche	LT
2007-2012	Chevrolet	Avalanche	LTZ
2010-2015	Chevrolet	Camaro	SS
1998-2002	Chevrolet	Camaro	Z28
1998-2002	Chevrolet	Camaro	Z28 SS
2011-2017	Chevrolet	Caprice	PPV
2009-2012	Chevrolet	Colorado	LT
2009-2012	Chevrolet	Colorado	WT
2003	Chevrolet	Corvette	50th Anniversary Edition
2003	Chevrolet	Corvette	50th Anniversary Edition Pace Car
1997-2013	Chevrolet	Corvette	Base
2010-2013	Chevrolet	Corvette	Grand Sport
1998	Chevrolet	Corvette	Indianapolis 500 Pace Car
2001-2004	Chevrolet	Corvette	Z06
2006-2009	Chevrolet	Impala	SS
2004	Chevrolet	Silverado 1500	Z71 Off-Road
2014-2017	Chevrolet	SS	Base
2003-2006	Chevrolet	SSR	Base
2000-2001,2006	Chevrolet	Tahoe	Base
2008-2013	Chevrolet	Tahoe	Hybrid
2000	Chevrolet	Tahoe	Limited
2000-2014	Chevrolet	Tahoe	LS
2000-2014	Chevrolet	Tahoe	LT
2007-2014	Chevrolet	Tahoe	LTZ
2012-2014	Chevrolet	Tahoe	PPV
2012-2014	Chevrolet	Tahoe	SSV
2000,2003-2006	Chevrolet	Tahoe	Z71
2008	Chevrolet	Trailblazer	Base
2003-2007	Chevrolet	Trailblazer	LS
2003-2009	Chevrolet	Trailblazer	LT
2003	Chevrolet	Trailblazer	LTZ
2006-2009	Chevrolet	Trailblazer	SS
2009-2012	GMC	Canyon	SLE
2009-2012	GMC	Canyon	SLT
2009-2012	GMC	Canyon	WT
2005-2009	GMC	Envoy	Denali
2003-2009	GMC	Envoy	SLE
2003-2009	GMC	Envoy	SLT
2000-2014	GMC	Yukon	Denali
2008-2013	GMC	Yukon	Hybrid
2006	GMC	Yukon	SL
2000-2014	GMC	Yukon	SLE
2000-2014	GMC	Yukon	SLT
2003-2009	Hummer	H2	Base
2008-2009	Hummer	H3	Adventure
2008-2010	Hummer	H3	Alpha
2008-2010	Hummer	H3	Base
2008-2009	Hummer	H3	Luxury
2008-2009	Hummer	H3	X
2009-2010	Hummer	H3T	Alpha
2009-2010	Hummer	H3T	Base
2003,2006	Isuzu	Ascender	Base
2003-2005	Isuzu	Ascender	Limited
2003-2006	Isuzu	Ascender	LS
2004-2005,2007	Isuzu	Ascender	S
1998-2002	Pontiac	Firebird	Formula
1998-2002	Pontiac	Firebird	Trans Am
2008-2009	Pontiac	G8	GT
2009	Pontiac	G8	GXP
2004-2006	Pontiac	GTO	Base
2006-2009	Saab	9-7x	4.2i
2006-2009	Saab	9-7x	5.3i
2008-2009	Saab	9-7x	Aero
2005	Saab	9-7x	Arc
2005	Saab	9-7x	Linear