Operation CHARM: Car repair manuals for everyone.
Home >> Pontiac >> 2000 >> Firebird V8-5.7L VIN G >> Repair and Diagnosis >> Heating and Air Conditioning >> Description and Operation >> Control Assembly, HVAC >> Air Distribution System >> General Description
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General Description

Vacuum regulates air flow through the system. Depending on the mode selected, the mode valves mix and direct either cooled, heated, or outside air through the air ducts. The various modes of operation are as follows:
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