GMC 1999 Savana Van Owner's Manual page 134

Comfort Controls
This section tells you how to make your air system work
for you. Your comfort control system uses
- -
ozone friendly R 134a refrigerant.
With these systems, you can control the heating, cooling
and ventilation in your van. Your vehicle also has a
-
flow through ventilation system described later in
this section.
Heater Controls
If your vehicle does not have air conditioning, your
heater controls will look like this.
3-2
Fan Knob
The knob on the left side of the heating system control
panel controls the fan speed. The knob has four speed
positions. To increase airflow, turn the knob toward HI.
To decrease airflow, turn it toward LO. To turn the fan
off, turn the mode knob on the far right to OFF.
Temperature Knob
The middle knob on the control panel lets you select the
relative temperature of the air flowing into the passenger
area of your vehicle. This knob will allow you to adjust
the relative air temperature independently of the
function knob setting. Turn the knob toward the red area
for warmer air. Turn the knob toward the blue area for
cooler air.
Mode Knob
The right knob changes the heater setting.
VENT: This setting directs air through the
instrument panel vents.
-
BI LEVEL: Use this setting to divide airflow
between the heater floor vents and instrument panel vents.
HEAT: This setting directs air through the heater
floor vents. This setting is useful for cold weather.
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