Mike's Workshop Manuals: Service manuals for every vehicle
Home >> GMC >> 1983 >> Forward Control 7.4 W, Automatic, 475/M40 >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> A/C-Heater System - Manual >> Operation >> System Controls >> Mode Control Lever

Mode Control Lever

Mode lever controls a vacuum operated selector valve to operate air door motors, providing desired air distribution. It also allows for selection of air conditioning or heating functions, including defroster air distribution.

scientia non olet · About Mike's Workshop Manuals