2004 Pontiac Grand Prix Owner's Manual - Page 129

Climate Controls Climate Control System Manual Climate Control System The climate control system allows you to manually control the heating, cooling and ventilation for the vehicle. During the highest fan speed selections, the fan speed will be temporarily reduced between the transition to a new mode. The fan will resume the original speed when the transition to the new mode is complete. 9(Off): fan off. Turn the knob to this position to turn the Mode Turn the middle knob to select the following modes: H(Vent) Outside Air: This mode directs outside air to the instrument panel outlets. If you are in city traffic, and the vehicle is stopped and idling, or the weather is hot, you may switch from this mode to the recirculation mode. To prevent the air inside the vehicle from becoming stale, be sure to return to the vent mode periodically. This mode directs half of the air to the instrument panel outlets, and then directs the remaining air to the floor outlets. Some air may be directed toward the windshield. Slightly cooler air is directed to the instrument panel outlets and warmer air is directed to the floor outlets. )(Bi-Level): Fan 9(Fan): Turn the knob by this symbol, located on the left side of the climate control panel, clockwise or counterclockwise to increase or decrease the fan speed. 3-25