2000 CHEVROLET EXPRESS heating

2-16
Rear Doors
CAUTION:
It can be dangerous to drive with the rear door(s)
or rear swing
-out windows 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.
CAUTION: (Continued)
CAUTION: (Continued)
If you must drive with the rear door(s) or rear
swing
-out windows open or if electrical wiring or
other cable connections must pass through the
seal between the body and the rear door(s) or
rear swing
-out windows:

Make sure all other windows are shut.

Turn the fan on your heating or cooling
system to its highest speed with the setting
on VENT, HEAT or DEFOG. Additionally,
on vehicles with heating/air conditioning
systems, MAX A/C or BI
-LEVEL A/C can
be used. That will force outside air into
your vehicle. See ªComfort Controlsº in
the Index.

If you have air outlets on or under the
instrument panel, open them all the way.
See ªEngine Exhaustº in the Index.

2-50
NOTICE:
Holding a cigarette lighter in with your hand
while it is heating can make it overload,
damaging the lighter and the heating element.
Just push the lighter all the way in and let go.
When it's done, it will pop back by itself.
To remove the front ashtray, pull up on the tab with a
key or similar object inserted in the tab, and lift the
ashtray out.
Sun Visors
To block out glare, you can swing down the visors.
You can also swing them from side to side.
Visor Vanity Mirror (Option)
Some visors have mirrors built in, with or without
lamps. Just lift the mirror cover on each visor to turn the
lamps on, if you have them.

2-60 Anti-Lock Brake System Warning Light
With the anti-lock brake
system, this light will
come on when you start
your engine and may stay
on for several seconds.
That's normal.
If the light stays on, or comes on when you're driving,
your vehicle needs service. If the regular brake system
warning light isn't on, you still have brakes, but you
don't have anti
-lock brakes. If the regular brake system
warning light is also on, you don't have anti
-lock brakes
and there's a problem with your regular brakes. See
ªBrake System Warning Lightº earlier in this section.
The anti
-lock brake system warning light should come
on briefly when you turn the ignition key to RUN. If the
light doesn't come on then, have it fixed so it will be
ready to warn you if there is a problem.
Engine Coolant Temperature Gage
This gage shows the
engine coolant temperature.
If the gage pointer moves
into the red area your
engine is too hot!
It means that your engine coolant has overheated.
If you have been operating your vehicle under normal
operating conditions, you should pull off the road, stop
your vehicle, and turn off the engine as soon as possible.
See ªEngine Overheatingº in the Index.

2-65 Malfunction Indicator Lamp (Service
Engine Soon Light) (Check Engine Light)
(8.1L Gasoline Engine -- Except California)
United States Canada
If this light comes on or flashes while you are driving,
two things may happen.
First, you won't notice any difference in engine
performance, but your tail pipe emissions may increase.
Second, your engine may not run properly or may stall
without warning. If either of these things happen, drive
or tow your vehicle to your dealer for service.This light should come on when the ignition is on, but
the engine is not running, as a check to show you it is
working. If it does not come on at all, have it repaired.
NOTICE:
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead to costly repairs that may not be
covered by your warranty.
Reduced Engine Power
The REDUCED ENGINE
POWER light will come
on when the cooling system
temperature gets too hot
and the engine further
enters the engine coolant
protection mode.
See ªEngine Overheatingº in the Index for
further information.

3-
3-1
Section 3 Comfort Controls and Audio Systems
In this section, you'll find out how to operate the comfort control and audio systems offered with your vehicle.
Be sure to read about the particular systems supplied with your vehicle.
3
-2 Comfort Controls
3
-7 Air Conditioning
3
-7 Heating
3
-7 Defrosting
3
-8 Rear Window Defogger (If Equipped)
3
-9 Ventilation System
3
-10 Audio Systems
3
-10 Setting the Clock for Systems without Radio
Data System
3
-11 Setting the Clock for Systems with Radio
Data System
3
-11 AM-FM Stereo
3
-14 AM-FM Stereo with Cassette Tape Player
(If Equipped)
3
-20 AM-FM Stereo with Compact Disc Player
(If Equipped)3
-24 AM-FM Stereo with Cassette Tape and
Compact Disc Player with Radio Data System
(RDS) and Automatic Tone Control
(If Equipped)
3
-35 AM-FM Stereo with 6-Disc Compact Disc
Player with Programmable Equalization and
Radio Data System (RDS) (If Equipped)
3
-46 Theft-Deterrent Feature RDS Radios
(If Equipped)
3
-46 Theft-Deterrent Feature Non-RDS Radios
(If Equipped)
3
-47 Understanding Radio Reception
3
-47 Tips About Your Audio System
3
-48 Care of Your Cassette Tape Player
3
-50 Care of Your Compact Discs
3
-50 Care of Your Compact Disc Player
3
-50 Fixed Mast Antenna
3
-50 Chime Level Adjustment (RDS Radios Only)

3-2
Comfort Controls
This section tells you how to make your air system work
for you.
With these systems, you can control the heating, cooling
and ventilation in your vehicle.
System Controls
If your vehicle does not have air conditioning, your
controls will look like this.Fan Knob
The knob on the left side of the system control panel
regulates 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 regulates the
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.

3-6
For warmer air, turn the knob toward the red area, and
for cooler air, turn the knob toward the blue area.
To regulate the location of the airflow, adjust the center
knob on the control panel. Turn the knob
counterclockwise for upper vent airflow or clockwise
for headliner vent air flow. Generally, the upper vents
are used for air conditioning and the floor vents for
heating. The knob can be set to any blend setting.
To adjust the airflow speed, turn the fan knob on the left
side of the control panel to the desired fan speed.
To activate the rear control, turn the fan knob on the
front control to REAR CNTL.
Rear Passenger Control
The rear control works just like the front control. It will
allow second seat passengers to adjust the controls if the
front control is switched to the rear position.

3-7
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 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 ªEngine Coolant Heaterº in the Index.
Defrosting
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.