2001 Oldsmobile Bravada Owner's Manual - Page 148

A/C: Press this button to turn the air conditioning on and off. The system will cool and dehumidify the air inside the vehicle. Air conditioning will be automatically disabled when the outside temperature drops below a level at which air conditioning is effective. Remember that in order for the automatic system to perform well, it needs A/C to provide cooling performance. When the air conditioner is on, you may sometimes notice slight changes in your vehicle's engine speed and power. This is normal because the system is designed to cycle the compressor on and off to keep the desired temperature. Heating The heater works best if you keep your windows closed while using it. On cold days, use HEATER with the temperature knob turned to the right. BLEND is useful in cool weather when you have fog or ice on the windshield or side windows. If you use the optional engine coolant heater before starting your engine, your heating system will produce warmer air faster to heat the passenger compartment in cold weather. See "Engine Coolant Heater" in the Index. Air Conditioning On hot days, open the windows long enough to let hot inside air escape. This reduces the time it takes for your vehicle to cool down. Then keep your windows closed for the air conditioner to work its best. For quick cool-down on very hot days, the A/C button should be on and the OUTSIDE AIR button should not be active. On cool but sunny days, use BI-LEVEL A/C to deliver warm air to the floor and cooler air to the instrument panel outlets. Defogging and Defrosting On cool, humid days, use BLEND to keep the windshield and side windows clear. Use DEFROST to remove fog or ice from the windshield quickly in extreme humid or cold conditions. Turn the temperature knob to the right and turn the fan control toward high. 3-5