2003 Buick Rendezvous Owner's Manual - Page 182

Dual Automatic Climate Control System Your vehicle may have the dual automatic climate control system. With this system you can control the heating, cooling and ventilation for your vehicle. Use the steps below to place the entire system in automatic mode: 1. Press the driver's temperature knob. 2. Adjust the temperature to a comfortable setting. Choosing the coldest or warmest temperature will not cause the system to heat or cool any faster. In cold weather, the system will start at reduced fan speeds to avoid blowing cold air into your vehicle until warmer air is available. Then, as the air warms, it will be delivered through the instrument panel outlets. The length of time needed for 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 as necessary. Automatic Operation AUTO (Automatic): When the urivers iemperaiure knob is pressed to select AUTO and the temperature is set, the system will automatically control the inside temperature, the air delivery and the fan speed. AUTO will also appear on the display. 3-31