GM Service Manual Online
For 1990-2009 cars only

Ducts and Outlets

The mode lever operates the air flow control doors. The air flow control doors route the air (either heated or unheated, fresh or recirculated) through the following ducts and outlets:

    • The right IP duct
    • The center IP duct
    • The left IP duct
    • The right window defroster duct
    • The left window defroster duct
    • The windshield defroster nozzle duct
    • The center floor duct
    • The right IP louver
    • The center IP louver
    • The left IP louver
    • The right window outlet
    • The left window outlet
    • The right windshield defroster nozzle outlet
    • The left windshield defroster nozzle outlet

Body Ventilation

The body ventilation system provides the passenger compartment with fresh, outside air. The body ventilation system routes this air through the same vents as the heated air.

The primary fresh air intake is located within the cowl panel. Air is drawn into the interior of the vehicle from the intake grille and is drawn out from the ventilator outlets in the body quarter panels.