Ventilation System

Ventilation System:

DESCRIPTION
General Motors vehicles have a "flow-through" ventilation system. A supply of outside air ("ram" air) flows into the vehicle when it is moving. When the vehicle is not moving, you can get a steady flow of outside air into the vehicle when the heater fan is running.

With the side windows closed, air will flow into the front air inlet grilles, through the vehicle and out the rear air exhaust valves.