air conditioning CHEVROLET EXPRESS 1996 1.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine To open the driver side rear door, pull the latch release
lever
at the inside edge of the door.
Both rear doors can be opened past
90 degrees by
opening
the doors past the first detent (90 degrees open),
then opening fully.
To close the rear doors, close the driver side rear door
first. Then, close the passenger side rear door. Check to
make sure both doors are completely closed.
A CAUTION:
It can be dangerous to drive with the rear doors
open because carbon monoxide (CO) gas can
come into your vehicle. You can’t see or smell
CO. It can cause unconsciousness and even death.
If you must drive with the rear doors open or if
electrical wiring or other cable connections must
pass through the seal between the body and the
rear doors:
0 Make sure all windows are shut.
0 lbrn the fan on your heating or cooling
system to its highest speed with the setting
on VENT, HEAT,
BLEND or DEF.
Additionally, on vehicles with heatinglair
conditioning systems,
NORM A/C or
BI-LEV A/C can be used. That will force
outside air into your vehicle. See “Comfort
Controls” in the Index.
instrument panel, open them all the way.
If you have air outlets on or under the
See “Engine Exhaust” in the Index.
2-11

Downloaded from www.Manualslib.com manuals search engine CAUTION:
It can be dangerous to drive with the rear
swing-out windows or rear door(s) open because
carbon monoxide (CO) gas can come into your
vehicle. You can’t see or smell CO. It can cause
unconsciousness and even death.
If you must drive with the rear swing-out
windows or rear door(s) open or if electrical
wiring or other cable connections must pass
through the seal between the body and the rear
swing-out windows or rear door(s):
Make sure all windows are shut.
CAUTION: (Continued) CAUTION:
(Continued)
Turn the fan on your heating or cooling
system to its highest speed with the setting
on VENT, HEAT, BLEND or DEF.
Additionally, on vehicles with heatingair
conditioning systems, NORM A/C or
BI-LEV
A/C can be used. That will force
outside air into your vehicle. See “Comfort
Controls” in the Index.
instrument panel, open them all the way.
If you have air outlets on or under the
See “Engine Exhaust” in the Index.
Horn
Press one of the horn buttons at each side of the steering
wheel to sound the horn.
2-28

Downloaded from www.Manualslib.com manuals search engine Sectic I 3 Comfort Controls and Audio Systems
In this section you’ll find out how to operate the comfort Heater Controls
control and audio systems offered with your vehicle. Be
sure to read about the particular systems supplied with
your vehicle.
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. If your vehicle does not have air conditioning, your
heater controls will
look like this.
3-1

Downloaded from www.Manualslib.com manuals search engine Heater/Air Conditioning Controls
If your vehicle has air conditioning, your heaterhir
conditioning controls will look like this.
Before using
your vehicle’s air conditioning, open the
windows to clear the vehicle
of hot air.
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, move the knob toward
HI. To decrease airflow, move it toward LO.
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. Move the knob clockwise toward
the red area for warmer air. Move the knob
counterclockwise toward the blue area
for cooler air.
3-3

Downloaded from www.Manualslib.com manuals search engine Mode Knob
The right knob on the control panel changes the
heatedair conditioning setting.
MAX A/C: With A/C on, move the right knob to
MAX A/C for maximum cooling. This setting puts the
system in the recirculation mode and helps to maximize
your air conditioner’s performance and your vehicle’s
fuel economy. This setting also cools the air the fastest.
After the vehicle’s interior reaches
a comfortable
temperature, move
the knob clockwise to place the air
conditioning system
in the A/C mode.
A/C: Use for normal cooling on hot days. This setting
cools outside air and directs it through the instrument
panel outlets.
+e
@ VENT: This setting, with the arrow pointing at
the figure’s head, directs air through the instrument
panel
vents.
+e
‘N VENTMEAT Use this setting, with the arrows
pointing at
the figure’s feet and head, to divide
airflow between the heater floor vents and instrument
panel vents.
+# HEAT This setting, with the arrow pointing at the
figure’s feet, directs air through the heater floor vents.
This setting is useful for cold weather.
U
?# HEATDEFROST Use this setting, with the
arrow pointing at the figure’s feet and the defroster
symbol near the figure’s head,
to divide airflow between
the heater
floor vents and windshield.
0
WO
DEFROST This setting with the defrost symbol
directs
air through the windshield defroster vents.
This setting is
useful when you have fog or ice on
the windshield.
3-4

Downloaded from www.Manualslib.com manuals search engine Rear Heater (Without Air Conditioning)
If you have a rear heater (without rear air conditioning),
the control switch
is located on the instrument panel.
To increase and decrease the flow of heated air to the
rear floor vents, move the switch marked
REAR HEAT
to the blower speed you want.
The knob has three speed positions.
To increase the flow
of heated air, move the switch toward HIGH. To turn the
fan
off, move the switch to OFF.
Rear Air Conditioning and Rear Heater
If your vehicle has a rear air conditioning and rear heater
system combination, controls are provided to regulate the
temperature, location
and speed of the air flow.
Front Passenger Control
To adjust the air temperature, turn the temperature knob
on the right side of the control panel.
For warmer air, turn the knob clockwise toward the red
area, and for cooler air, turn the knob counterclockwise
toward the blue area.
3-5

Downloaded from www.Manualslib.com manuals search engine To regulate the airflow location, adjust the center knob
on the control panel. Turn the knob counterclockwise
for floor vent air flow or clockwise for headliner
vent air
flow. Generally, the upper vents are used for air
conditioning and the floor vents for heating. The control
knob can be set to any blend setting.
To adjust the air flow speed, turn the fan control knob
on
the left side of the control panel to the desired
blower setting.
To activate the rear control, move the fan knob on the
front control
to REAR CNTL.
The rear control works just like the front control. It will
allow second seat passengers to adjust the controls as
they desire.
3-6

Downloaded from www.Manualslib.com manuals search engine Air Conditioning
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.
Heating
On cold days, use HEATER 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 ftdster to heat the passenger compartment in
cold weather. See “Engine Coolant Heater” in the Index.
3-7

Downloaded from www.Manualslib.com manuals search engine If your vehicle has a 7.4L engine and air conditioning,
your vehicle will have
a auxiliary engine fan in addition
to the belt driven fan.
A CAUTION:
If your vehicle has air conditioning, the auxiliary
engine fan under the hood can start up and
injure you even when the engine is not running.
Keep hands, clothing and tools
away from any
underhood electric fan.
Things that burn can get on hot engine parts and
start
a fire. These include liquids like gasoline,
oil, coolant, brake fluid, windshield washer and
other fluids, and plastic or rubber.
You or others
could be burned. Be careful not to drop or spill
things that will burn onto a hot engine.
Before closing the hood, be sure all the filler caps are
on properly.
Then lift the hood to relieve pressure
on the hood prop.
Remove the hood prop from the slot in the hood and
return the prop
to its retainer. Then just let the hood
down and close
it firmly.
Noise Control System
The following information relates to compliance with
Federal noise emission standards for vehicles with a
Gross Vehicle Weight Rating (GVWR) of more than
10,000
lbs. (4 536 kg). The Maintenance Schedule
booklet provides information on maintaining the noise
control system
to minimize degradation of the noise
emission control system during the life of your vehicle.
The noise control system warranty is given
in your
Warranty booklet.
These standards apply
only to vehicles sold in the
United States.
6-9

Downloaded from www.Manualslib.com manuals search engine Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same. If the air conditioning sys&m in your vehicle needs refrigerant, be
sure the proper refrigerant is used. If you’re not sure, ask your GM dealer.
TYPE
Refrigerant
R- 134a
QTY Front
Only
3.00 lbs.
(1.36 kg)
u
QTY Front and
Rear
4.875 lbs.
(2.21 kg)