2002 Oldsmobile Aurora Owner's Manual - Page 163
2002 Oldsmobile Aurora Manual
Page 163 highlights
On very hot days, open the windows long enough to let the hot air out. This reduces the time required to cool the interior of the vehicle to a comfortable temperature. If the system is in the automatic mode (left and right mode knob indicator lights are on), during very hot days the system will automatically go to the recirculation mode and the temperature door will initially be at the full cold position for maximum cooling. You can choose the extreme temperature setting of 60_F (16_C), but the system will not cool any faster by choosing this setting. In cold weather, the system will delay turning on the fan to avoid blowing cold air into the vehicle. The length of the delay depends on the engine coolant temperature and the outside temperature. The fan speed will increase as the temperature of the engine coolant rises. Turning the right mode knob will override this delay by cancelling the automatic fan control mode. Defogging and Defrosting On cool, humid days, use the defog setting to keep the windows clear while also providing heat through the floor ducts. Turn the left mode knob clockwise to defrost to quickly remove fog or ice from the windshield. For maximum front defrost performance under extreme icing or frosting conditions, increase the temperature setting to 90_F (33_C) and increase the fan speed to high. Heating In cold weather, if the automatic mode is selected (left and right mode knob indicator lights are on), the system will automatically direct the airflow out of the floor ducts and the temperature door will initially be positioned at the full hot position. You can choose the extreme temperature setting of 90_F (32_C), but the system will not warm up any faster by selecting this setting. 3-7