2002 GMC Envoy Owner's Manual - Page 186

Ventilation Tips D Keep the hood and front air inlet free of ice, snow or any other obstruction such as leaves. The heater and defroster will work better, reducing the chance of fogging your windows. recirculation to reduce the chance of fogging your windows. in cold weather, select floor mode to supply air through the floor outlets. Then turn the fan on high for a few moments before driving away. This will blow moist air from the intake outlets toward the floor, not the windshield. It reduces the chance of fogging your windows. If you have the electronic system, the AUTO setting will do this for you. Manual operation of the electronic system in the floor mode will also supply air through the floor outlets. objects. This helps air to circulate throughout your vehicle. Comfort Control Steering Wheel Controls (If Equipped) If your vehicle has this feature, you can control certain comfort control functions using the buttons on your steering wheel. D In cool damp weather, minimize your use of D When you enter a vehicle with the standard system (Fan): Press the up arrow to increase the fan speed and the down arrow to decrease the fan speed. (Temperature): Press the up arrow to increase the temperature of the air flowing through the system and the down arrow to decrease the temperature of the air flowing through the system. D Keep the air path under the front seats clear of 3-12