GM Service Manual Online
For 1990-2009 cars only

Object Number: 589698  Size: MF

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

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