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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 >> "DEF" - Dial @ 85

"DEF" - Dial @ 85

Air should be delivered out defroster outlets at fixed high blower speed. Some floor bleed out heater.

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