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October 15, 2004 Service bulletin

Tick noise at idle

Chevrolet technical service bulletin 3077 for 2002-2004 Chevrolet Trailblazer, 2002-2004 GMC Envoy and 2002-2004 Oldsmobile Bravada and others.

Bulletin number
3077
Component
Engine and engine cooling: cooling system: fan
Summary
Tick noise at idle. Tt

Owners of these vehicles have filed 530 complaints in the engine category.

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