GMC 1993 Jimmy Owner's Manual page 152

Comfort Controls & Audio Systems
IieatindAir Conditioning System
KO507
If your vehicle has air conditioning, your heatinglair conditioning system will
look like this.
Before using your vehicle's air conditioning, open the windows to clear the
vehicle of hot air.
Fan Lever
The lever at the top of the system has four positions. To increase the air
flow, move the lever toward HI. To decrease the air flow, move it toward LO.
Temperature Lever
The lever on the left of the system display lets
you select the temperature ot
the air coming into your vehicle. Move the lever up for warmer air. Move the
lever down for cooler air.
Function Lever
The lever on the right of the system can be moved to seven different heating
and air conditioning functions.
DEFROST: This setting operates the defroster. Most of the air comes out
near the windshield, with some going to the floor vents and side window
defrost vents. Use this when you get fog or ice on the windshield.
HTR
(Heater):
Most of the air comes out near the floor. The rest comes out
from the defroster vents under the windshield and at your front side windows.
This is best for cold weather.
3-6