1999 GMC SAFARI heating

iii
Section
3
Comfort Controls and Audio Systems
Section
4
Your Driving and the Road
Section
5
Table of Contents (cont'd)
Braking/Anti-lock Brakes
Steering
Driving Tips for Various Road Conditions
Off-Road DrivingRecreational Vehicle Towing
Loading Your Vehicle
Towing a Trailer Heating and Air Conditioning
Setting the Radio ClockRadio/Cassette Player/CD Player
Radio Theft-Deterrent Feature (If Equipped)
Hazard Warning Flashers
Jump Starting
Towing Your VehicleEngine Overheating
Changing a Flat Tire
If You're Stuck
Problems on the Road

2-14
Hatch
CAUTION:
It can be dangerous to drive with the rear
swing
-out windows, rear hatch or 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 swing-out
windows, rear hatch or rear doors open or if
electrical wiring or other cable connections must
pass through the seal between the body and the
rear swing
-out windows, rear hatch or rear doors:

Make sure all other windows are shut.

Turn the fan on your heating or cooling
system to its highest speed with the setting
on anything but MAX A/C. 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.
Hatch Release
You can use your key to unlock the hatch and all
the other doors from the outside. Insert the key into
the hatch release button and turn it counterclockwise.
All doors will unlock.
You may also use the keyless entry system described earlier.
The hatch can be opened or closed without a key if the
door lock system is unlocked.
To open the hatch, unlock it, press the button and lift the
handle located in the center of the door.

2-32 Swing-Out Windows
To open your swing-out
windows, pull up on
the latch and push the
window out.
To close the window, pull the latch toward you and
push it down.CAUTION:
It can be dangerous to drive with the rear
swing
-out windows, rear hatch or 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 swing-out
windows, rear hatch or rear doors open or if
electrical wiring or other cable connections must
pass through the seal between the body and the
rear swing
-out windows, rear hatch or rear doors:

Make sure all other windows are shut.

Turn the fan on your heating or cooling
system to its highest speed with the setting
on anything but MAX A/C. 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.

2-52
Don't exceed the maximum vehicle capacity when loading
your vehicle. For more information on vehicle capacity
and loading, see ªLoading Your Vehicleº in the Index.
To prevent damage or loss of cargo as you're driving,
check now and then to make sure the luggage carrier
and cargo are still securely fastened.
Ashtrays and Cigarette Lighter
The cigarette lighter is on the left of the engine
cover console.
To use the lighter, press it in all the way and let go.
When it's done heating, it will pop back by itself.
NOTICE:
Don't hold a cigarette lighter in with your hand
while it is heating. If you do, it won't be able to
back away from the heating element when it's
ready. That can make it overheat, damaging the
lighter and the heating element.
NOTICE:
When using the cigarette lighter as an accessory
power outlet, maximum electrical load must not
exceed 20 amps. Always turn off any electrical
equipment when not in use. Leaving electrical
equipment on for extended periods will drain
your battery.
The front ashtray is just above the passenger's side
front cupholder.
To remove the front ashtray, open it and gently pull
it slightly past its stop.
To remove the ashtray on the sliding door, open it,
press down on the inside tab and pull out.
You may have another ashtray on the driver's sidewall.
Press the right side to turn the ashtray around for use.
To remove the ashtray, open it and gently pull it off
the hinge.

2-66 Engine Coolant Temperature Gage
This gage shows the
engine coolant temperature.
If the gage pointer moves
to 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
driving conditions, you should pull off the road, stop
your vehicle and turn off the engine as soon as possible.
The ªProblems on the Roadº section of this manual
shows you what to do. See ªEngine Overheatingº in
the Index.
Malfunction Indicator Lamp
(Service Engine Soon Light in the United
States or Check Engine Light in Canada)
United States Canada
Your vehicle is equipped with a computer which monitors
operation of the fuel, ignition and emission control systems.
This system is called OBD II (On
-Board
Diagnostics
-Second Generation) and is intended to
assure that emissions are at acceptable levels for the
life of the vehicle, helping to produce a cleaner
environment. The SERVICE ENGINE SOON or
CHECK ENGINE light comes on and a chime will sound
to indicate that there is a problem and service is required.
Malfunctions often will be indicated by the system before
any problem is apparent. This may prevent more serious
damage to your vehicle. This system is also designed
to assist your service technician in correctly diagnosing
any malfunction.

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
-2 Heating/Air Conditioning System
3
-3 Heating System
3
-4 Rear Heating System (Option)
3
-5 Rear Air Conditioning System (Option)
3
-5 Air Conditioning
3
-6 Heating
3
-6 Defrosting
3
-6 Ventilation System
3
-8 Rear Window Defogger (Option)
3
-9 Audio Systems
3
-9 Setting the Clock for Systems with
SET Button
3
-9 Setting the Clock for Systems with HR
and MN Buttons
3
-10 AM-FM Stereo3
-12 AM-FM Stereo with Cassette Tape Player
(If Equipped)
3
-15 AM-FM Stereo with Cassette Tape Player
and Automatic Tone Control (If Equipped)
3
-19 AM-FM Stereo with Compact Disc Player
and Automatic Tone Control (If Equipped)
3
-24 Rear Seat Audio (If Equipped)
3
-26 Remote Compact Disc Player (If Equipped)
3
-28 Theft-Deterrent Feature (If Equipped)
3
-30 Understanding Radio Reception
3
-30 Tips About Your Audio System
3
-31 Care of Your Cassette Tape Player
3
-33 Care of Your Compact Discs
3
-33 Care of Your Compact Disc Player
3
-33 Fixed Mast Antenna

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. Your vehicle also has a
flow
-through ventilation system described later in
this section.
Heating/Air Conditioning System
If your vehicle has air conditioning, your heating/air
conditioning controls will look like this.Fan Knob
This control has four positions. To increase airflow,
turn the knob toward HI. To decrease airflow, move it
toward LO.
Temperature Knob
This knob is next to the fan knob. It controls the
temperature of the air flowing into your vehicle. Turn
the knob clockwise for warmer air. Turn the knob
counterclockwise for cooler air.
Function Knob
This knob is next to the temperature knob.
OFF: This setting turns the system off.
MAX A/C: This cools the air the fastest, by
recirculating the inside air. Turn the temperature knob
all the way to MAX A/C.
A/C: This setting brings in outside air and cools it.

3-3
BI-LEVEL: This setting brings in outside air and
blows it out through the heater floor vents and the
instrument panel vents. If you move the temperature
knob between hot and cold, cooler air will come out of
the upper vents while warmer air comes out of the floor
vent. The air conditioning compressor may operate in
this setting to cool the air.
VENT: The air comes out at the vents on your
instrument panel. The air conditioning compressor will
not run in this position. Adjust the temperature knob for
warmer or cooler air.
HEATER: Most of the air comes out near the
floor. The rest comes out from the defroster vents under
the windshield and at the front side windows.
BLEND: With this setting, the heated outside air
comes out of both the heater vents and defroster vents.
Adjust the temperature knob for warmer or cooler air.
The air conditioning compressor may operate in this
setting to dehumidify the air.
DEFROST: This setting operates the defroster.
Most of the air comes out near the windshield, with
some going to the floor vents and front side windows.
The air conditioning compressor may operate in this
setting to dehumidify the air.
Heating System
If your vehicle does not have air conditioning, your
heater controls will look like this.
Fan Knob
This control has four positions. To increase airflow,
turn the knob toward HI. To decrease airflow, move it
toward LO.
Temperature Knob
This knob is next to the fan knob. It controls the
temperature of the air flowing into your vehicle. Turn
the knob clockwise for warmer air. Turn the knob
counterclockwise for cooler air.