Page 113 of 334

Climate Controls
Climate Control System
With this system you can control the heating, cooling
and ventilation for your vehicle.
Operation
To change the current mode, select one of the following:
HMAX:This mode is used for maximum cooling. It
will recirculate much of the air inside your vehicle.
It maximizes your air conditioner’s performance and your
vehicle’s fuel economy. The air-conditioning compressor
will run automatically in this mode when it is needed
to help dry the air in the vehicle.
H(Vent):This mode directs air to the instrument
panel outlets.
)(Bi-Level):This mode directs half of the air to the
instrument panel outlets, then directs most of the
remaining air to the floor outlets with some air directed
at the side windows.
A(Floor):This mode directs most of the air to the
floor outlets with some air directed to the side windows.
The right knob can also be used to select defog or
defrost modes. Information on defogging and defrosting
can be found later in this section.
9(Fan):Turn the left knob clockwise or
counterclockwise to increase or decrease the fan speed.
Temperature Control:Turn the center knob clockwise
or counterclockwise to manually increase or decrease
the temperature inside your vehicle.
When it’s cold outside 0°F (−18°C) or lower, use the
engine coolant heater, if equipped, to provide warmer air
faster to your vehicle. An engine coolant heater warms
the coolant that the engine uses to provide heat to
warm the inside of your vehicle. For more information,
seeEngine Coolant Heater on page 2-19.
3-19
Page 114 of 334

A/C (Air Conditioning):Press this button to turn the
air-conditioning system on or off. When A/C is pressed,
an indicator light above the button will come on to let you
know that air conditioning is activated. The fan knob must
be set to a speed for the air conditioning to operate.
On hot days, open the windows to let hot inside air
escape; then close them. This helps to reduce the time
it takes for your vehicle to cool down. It also helps
the system to operate more efficiently.
For quick cool down on hot days:
1. Select the vent mode.
2. Select the highest fan speed.
3. Select A/C.
4. Select the recirculation mode.
5. Select the coolest temperature.
Using these settings together for long periods of time
may cause the air inside of your vehicle to become too
dry. To prevent this from happening, after the air in
your vehicle has cooled, turn the recirculation mode off.
The air-conditioning system removes moisture from
the air, so you may sometimes notice a small amount of
water dripping underneath your vehicle while idling or
after turning off the engine. This is normal.Defogging and Defrosting
Fog on the inside of windows is a result of high humidity
(moisture) condensing on the cool window glass. This
can be minimized if the climate control system is
used properly. There are two modes to choose from to
clear fog or frost from your windshield. Use the
defog mode to clear the windows of fog or moisture and
warm the passengers. Use the defrost mode to
remove fog or frost from the windshield more quickly.
Turn the right knob clockwise or counterclockwise
to select defog or defrost mode.
-(Defog):This mode directs half of the air to the
windshield with most of the remaining air directed to the
floor outlets and some air directed at the side windows.
When you select this mode, the system turns off
recirculation automatically and runs the air-conditioning
compressor unless the outside temperature is at or
below freezing. The recirculation mode cannot be
selected while in the defog mode.
1FRONT (Defrost):This mode directs most of the air
to the windshield, with some air directed to the floor
outlets. In this mode, the system will automatically turn off
recirculation and run the air-conditioning compressor,
unless the outside temperature is at or below freezing.
Recirculation cannot be selected while in the defrost
mode. Do not drive the vehicle until all the windows
are clear.
3-20
Page 115 of 334

Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
defogger on or off. An indicator light above the
button will come on to let you know that the rear window
defogger is activated. Be sure to clear as much snow
from the rear window as possible.
The rear window defogger will turn off approximately
10 minutes after the button is pressed. If turned on
again, the defogger will only run for approximately
five minutes before turning off. The defogger can also
be turned off by pressing the button again or by turning
off the engine.
Notice:Don’t use anything sharp on the inside of
the rear window. If you do, you could cut or damage
the warming grid, and the repairs wouldn’t be
covered by your warranty. Do not attach a temporary
vehicle license, tape, a decal or anything similar
to the defogger grid.
Outlet Adjustment
Use the louvers on the air outlets to change the
direction of the airflow.
Operation Tips
•Clear away any ice, snow or leaves from the air
inlets at the base of the windshield that may
block the flow of air into your vehicle.
•Use of non-GM approved hood deflectors may
adversely affect the performance of the system.
•Keep the path under the front seats clear of objects
to help circulate the air inside of your vehicle more
effectively.
•When an objectionable odor outside the vehicle is
encountered, use the MAX mode, with the
temperature knob at a comfortable setting to
prevent the odor from entering the vehicle through
the ventilation system. This can be helpful when
driving through a long tunnel with poor ventilation.
However, extended usage of this mode in cold
or cool weather can cause window fogging.
3-21
Page 116 of 334

Warning Lights, Gages, and
Indicators
This part describes the warning lights and gages that may
be on your vehicle. The pictures will help you locate them.
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause
an expensive repair or replacement. Paying attention to
your warning lights and gages could also save you
or others from injury.
Warning lights come on when there may be or is a
problem with one of your vehicle’s functions. As you will
see in the details on the next few pages, some
warning lights come on briefly when you start the
engine just to let you know they are working. If you are
familiar with this section, you should not be alarmed
when this happens.Gages can indicate when there may be or is a problem
with one of your vehicle’s functions. Often gages
and warning lights work together to let you know when
there is a problem with your vehicle.
When one of the warning lights comes on and stays on
when you are driving, or when one of the gages shows
there may be a problem, check the section that tells you
what to do about it. Please follow this manual’s advice.
Waiting to do repairs can be costly — and even
dangerous. So please get to know your warning lights
and gages. They are a big help.
Instrument Panel Cluster
Your instrument panel cluster is designed to let you
know at a glance how your vehicle is running. You’ll
know how fast you’re going, how much fuel you have,
and many other things you’ll need to drive safely
and economically.
3-22
Page 117 of 334
Your vehicle has this cluster or one very similar to it. It includes indicator warning lights and gages that are explained on
the following pages. Be sure to read about them.
United States Cluster shown, Canadian Cluster similar
3-23
Page 118 of 334
Speedometer and Odometer
Your speedometer lets you see your speed in both
miles per hour (mph) and kilometers per hour (km/h).
Your odometer shows how far your vehicle has
been driven, in either miles (used in the United States)
or kilometers (used in Canada).
Your vehicle has a tamper resistant odometer. The
digital odometer will read 999,999 if someone tries to
turn it back.
Repair or replacement of your instrument panel cluster
should only be performed by a qualified GM service
center.
Trip Odometer
The trip odometer can tell you how far you have driven
since you last reset it.
The reset button is located below the tachometer. To
reset the trip odometer to zero, press and hold briefly the
ribbed side of the button while the trip odometer is
displayed. Also, by pressing this button for less than
one second you can toggle between the odometer and
the trip odometer.
Tachometer
The tachometer shows your engine speed in revolutions
per minute (rpm).
3-24
Page 119 of 334
Safety Belt Reminder Light
When the key is turned to ON or START, a chime will
come on for several seconds to remind people to fasten
their safety belts, unless the driver’s safety belt is
already buckled.
The safety belt light will
also come on and stay on
for several seconds, then it
will flash for several more.
If the driver’s belt is already buckled, neither the chime
nor the light will come on.
Airbag Readiness Light
There is an airbag readiness light on the instrument
panel, which shows airbag. The system checks
the airbag’s electrical system for malfunctions. The light
tells you if there is an electrical problem. The system
check includes the airbag modules, the wiring and
the crash sensing and diagnostic module. For more
information on the airbag system, seeAirbag System on
page 1-51.
This light will come on when you start your vehicle, and
it will flash for a few seconds. Then the light should
go out. This means the system is ready.
United StatesCanada
3-25
Page 120 of 334

If the airbag readiness light stays on after you start the
vehicle or comes on when you are driving, your
airbag system may not work properly. Have your vehicle
serviced right away.
{CAUTION:
If the airbag readiness light stays on after you
start your vehicle, it means the airbag system
may not be working properly. The airbags in
your vehicle may not in ate in a crash, or they
could even in ate without a crash. To help avoid
injury to yourself or others, have your vehicle
serviced right away if the airbag readiness light
stays on after you start your vehicle.
The airbag readiness light should flash for a few
seconds when you turn the ignition key to ON. If the
light doesn’t come on then, have it fixed so it will
be ready to warn you if there is a problem.
Charging System Light
The charging system light
will come on for a few
seconds when you turn on
the ignition as a check
to show you it is working.
If it stays on, or comes on while you are driving and you
hear a chime, you may have a problem with the
electrical charging system. It could indicate that you
have a loose generator drive belt or another electrical
problem. Have it checked right away. Driving while
this light is on could drain your battery.
If you must drive a short distance with the light on, be
certain to turn off all your accessories, such as the radio
and air conditioner.
3-26