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Re: Is there something wrong with my '02 GMC HVAC?
Posted to Technical Discussion Forum on 3/17/2004 3 Replies

This may be normal.

The HVAC control module controls the air intake through the recirculation actuator. The recirculation switch closes the recirculation door in order to circulate the air within the vehicle. The outside air switch opens the recirculation do... Login to read more.

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