GMC savana 2002 Manual Do Utilizador

Before using your vehicle’s air conditioning, open the
windows to clear the vehicle of hot air. This reduces the
time it takes for your vehicle to cool down. Then keep
your windows closed for the air conditioner to work at
its best.

You can use MAX A/C with the temperature knob in the
blue area when it’s really hot outside and you need to
cool the inside air quickly. MAX A/C lets in only a little
air from the outside.

If you first use MAX A/C, you can then use A/C with
the temperature knob in the blue area, as soon as the
vehicle has cooled down, so outside air will be going
through your vehicle.

If your vehicle has rear air conditioning, setting it on 
LO may enhance front A/C performance by allowing
trapped refrigerant in rear lines to circulate.

When the air conditioning, defrost or blend is on, you
may notice a slight increase or decrease in engine speed,
due to compressor operation. This is normal because the
system is designed to cycle the compressor on and off to
keep the desired temperature.

On cold days, use the floor setting with the temperature
knob in the red area. Outside air will be brought in
through the floor outlets. The heater works best if you
keep your windows closed while using it.

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.

Use defrost to remove fog or ice from the windshield
quickly in extremely cold conditions. The temperature
knob should be in the red area and the fan knob toward
high. The air conditioning compressor may operate in
this setting to dehumidify the air.