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Home >> Buick >> 1975 >> Skyhawk Base, Automatic Trans >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Automatic Temperature Control >> Testing >> Automatic Climate Control System Functional Test >> "HI" - Dial @ 65

"HI" - Dial @ 65

Air should be delivered out A/C outlets at a fixed high blower speed and cool to cold temperature. The recirculating door may be open (blower noise increases). Door movement will be slow because of vacuum delay plug.