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October 31, 2001 Service bulletin

Brief information regarding the availability of an enhanced calibration for engine cooling fan noise and...

Chevrolet technical service bulletin 311001 for 2002 Chevrolet Trailblazer, 2002 GMC Envoy and 2002 Oldsmobile Bravada.

Bulletin number
311001
Component
Engine and engine cooling: cooling system: fan
Summary
Brief information regarding the availability of an enhanced calibration for engine cooling fan noise and p1484 diagnostic trouble code. Tt

Owners of these vehicles have filed 316 complaints in the engine category.

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