GM Service Manual Online
For 1990-2009 cars only

Caution: NEVER spray water on a hot heat exchanger. The resulting steam could cause personal injury.

Notice: The heat exchanger fins are necessary for good heat transfer. Do not brush the fins. This may cause damage to the fins, reducing heat transfer.

    • Clean the front face of the A/C condenser.

       Important: Use water only with the engine not running and cool.

    • Clean the front face of the radiator annually. Remove bugs, leaves, etc. by blowing compressed air through the radiator. Blow compressed air from the rear toward the front. If compressed air is not available a water hose can be used to force water through the radiator fins.