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Home >> GMC >> 1999 >> Forward Control 7.4 B >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System >> Operation >> A/C-Heater Control Panel >> Temperature Control Lever
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Temperature Control Lever

This lever controls discharge air temperature in all mode positions. Full hot position provides maximum heat. Full cold position provides unheated or cooled air.