1996 Chevrolet Blazer Owner's Manual - Page 138

Ventilation Tips a Keep the hood andfront air inlet free of ice, snow or Rear Window Defogger (Option) any other obstruction (such as leaves). The heater and defroster will workfar better, reducing the chance of fogging the inside of your windows. 0 1 When you enter a vehicle in cold weather, turn the blower fan toHI for a few moments before driving off. This helps clear the intake ducts of snow and moisture, and reduces thechance of fogging the inside of your windows. Keep the air path under the front seats clear of objects. This helps air to circulate throughout your vehicle. 0 Defogging and Defrosting On cool, humid days, use BLEND to keep the windshield and side windows clear. Use DEFROST to remove fog orice from the windshield quickly in extremely humid or cold conditions. Turn the temperature knob clockwise and move the fan control toward HI. If your vehicle has thisoption, the rear window will have lines that warm the glass. For best results, clear the window of as much snow or ice as possible before using the rear window defogger. To turn on the rear window defogger, find the switch marked REAR DEFOG on your instrument panel below the headlamp switch. Press ONuntil the light in the switch conles on, then release it. It will only work if the ignition switch is turned to RUN. 3-4