October 1, 2003 Service bulletin

Information on new spark plugs and gapping. various models including pontiac gto 2004. tt

Chevrolet technical service bulletin 030604060 for 2000-2004 Chevrolet Tahoe, 1999-2004 Chevrolet Silverado and 2000-2004 Chevrolet Suburban and others.

Bulletin number: 030604060
Component: Engine and engine cooling: engine
Summary: Information on new spark plugs and gapping. Various models including pontiac gto 2004. Tt

Owners of these vehicles have filed 1,319 complaints in the engine category.

Vehicles covered

Chevrolet Tahoe 2000-2004 2000 2001 2002 2003 2004
Chevrolet Silverado 1999-2004 1999 2000 2001 2002 2003 2004
Chevrolet Suburban 2000-2004 2000 2001 2002 2003 2004
Chevrolet Trailblazer 2003-2004 2003 2004
Chevrolet Corvette 1997-2004 1997 1998 1999 2000 2001 2002 2003 2004
GMC Yukon 2000-2004 2000 2001 2002 2003 2004
GMC Sierra 1999-2004 1999 2000 2001 2002 2003 2004
Chevrolet Camaro 1998-2002 1998 1999 2000 2001 2002
GMC Envoy 2003-2004 2003 2004
Cadillac CTS 2004 2004
Chevrolet Avalanche 2002-2004 2002 2003 2004
Cadillac Escalade 2002-2004 2002 2003 2004
GMC Yukon Denali 2001-2004 2001 2002 2003 2004
Chevrolet Express 2003-2004 2003 2004
Pontiac Firebird 1998-2002 1998 1999 2000 2001 2002
Buick Rainier 2004 2004
Hummer H2 2003-2004 2003 2004
GMC Sierra Denali 2004 2004
GMC Yukon XL Denali 2001-2003 2001 2002 2003

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