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January 1, 2004 Service bulletin

Exhaust vibration resonance or moan

Chevrolet technical service bulletin 3121 for 1999-2005 Chevrolet Tahoe, 1999-2005 Chevrolet Silverado and 1999-2005 Chevrolet Suburban and others.

Bulletin number: 3121
Component: Engine and engine cooling
Summary: Exhaust vibration resonance or moan. (2004-2005 gmc denali) sc

Owners of these vehicles have filed 1,056 complaints in the engine category.

Vehicles covered

Chevrolet Tahoe 1999-2005 1999 2000 2001 2002 2003 2004 2005
Chevrolet Silverado 1999-2005 1999 2000 2001 2002 2003 2004 2005
Chevrolet Suburban 1999-2005 1999 2000 2001 2002 2003 2004 2005
GMC Yukon 1999-2005 1999 2000 2001 2002 2003 2004 2005
GMC Sierra 1999-2005 1999 2000 2001 2002 2003 2004 2005
Chevrolet Avalanche 1999-2005 1999 2000 2001 2002 2003 2004 2005
Cadillac Escalade 1999-2005 1999 2000 2001 2002 2003 2004 2005
Hummer H2 2003-2005 2003 2004 2005
GMC Denali 1999-2003 1999 2000 2001 2002 2003

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