Check a VIN

January 21, 2003 Service bulletin

Engine overheat condition with little or no heater output

Chevrolet technical service bulletin 012103 for 2002-2003 Chevrolet Trailblazer and 2002-2003 GMC Envoy.

Bulletin number
012103
Component
Engine and engine cooling: cooling system
Summary
Engine overheat condition with little or no heater output. Oasis tt

Owners of these vehicles have filed 379 complaints in the engine category.

Vehicles covered

VIN decoder

See the problems and recalls for an exact car

Buying a used Chevrolet Trailblazer?

Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.

Check its history