2008 Pontiac Grand Prix Owner's Manual - Page 148

Dual Automatic Climate Control System With this system you can control the heating, cooling, and ventilation for your vehicle. For the automatic system to function, the temperature must be set between 60°F (15°C) and 90°F (32°C). 1. Adjust the temperature to a comfortable setting. 2. Press the PASS button to turn the passenger climate control system on and off. When the passenger system is off, the driver's temperature setting is also used for the passenger and the passenger display is off. In cold weather, the system will start at reduced fan speeds to avoid blowing cold air into your vehicle until warmer air is available. The system will start out blowing air at the floor but may change modes automatically as the vehicle warms up to maintain the chosen temperature setting. The length of time needed for the air to warm up will depend on the outside temperature and the length of time that has elapsed since your vehicle was last driven. 3. Wait for the system to regulate. This may take from 10 to 30 minutes. Then adjust the temperature, if necessary. Do not cover the solar sensor located in the center of the instrument panel, near the windshield. For more information on the solar sensor, see "Sensors" later in this section. Automatic Operation AUTO (Automatic): Turn both the fan and mode knob to AUTO for automatic control of the inside temperature, the air delivery mode and the fan speed. You may notice a delay of two to three minutes before the fan comes on when the automatic operation is used in cold weather. 3-32