Rear Heating System - GMC 2003 Safari Owner's Manual

Defogging and Defrosting
Rear Heating System
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(Blend): With this setting, the outside air comes
out of both the floor and defroster outlets. Adjust the
temperature knob for warmer or cooler air. The air
conditioning compressor may operate in this setting to
that allows you to adjust the amount of air flowing
into the rear of the vehicle, from the front-seating area.
This feature works with the main climate-control
system in your vehicle.
dehumidfy ihe air.
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(Defrost): This setting operates the defroster.
Most of the air comes out near the windshield, with
some going to the floor outlets and front side windows.
The air conditioning compressor may operate in this
setting to dehumidify the air.
The bi-level setting is useful for cold weather with a
large number of passengers or very humid conditions to
help keep the windshield clear. 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 control toward high.
The thumbwheel for this system is located to the right
of the audio system.
Turn the thumbwheel up or down to increase or
decrease the amount of heated air sent to the
rear-seating area.
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