
Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should turn the light off.
Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel. See
Gasoline Octane on page 5-5. Poor fuel quality will
cause your engine not to run as efficiently as designed.
You may notice this as stalling after start-up, stalling
when you put the vehicle into gear, mis ring, hesitation
on acceleration, or stumbling on acceleration. (These
conditions may go away once the engine is warmed up.)
This will be detected by the system and cause the
light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at least
one full tank of the proper fuel to turn the light off.
If none of the above steps have made the light turn off,
your dealer can check the vehicle. Your dealer has
the proper test equipment and diagnostic tools to x any
mechanical or electrical problems that may have
developed.Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have or
may begin programs to inspect the emission control
equipment on your vehicle. Failure to pass this
inspection could prevent you from getting a vehicle
registration.
Here are some things you need to know to help your
vehicle pass an inspection:
Your vehicle will not pass this inspection if the check
engine light is on or not working properly.
Your vehicle will not pass this inspection if the OBD
(on-board diagnostic) system determines that critical
emission control systems have not been completely
diagnosed by the system. The vehicle would be
considered not ready for inspection. This can happen if
you have recently replaced your battery or if your
battery has run down. The diagnostic system is
designed to evaluate critical emission control systems
during normal driving. This may take several days
of routine driving. If you have done this and your vehicle
still does not pass the inspection for lack of OBD
system readiness, your GM dealer can prepare the
vehicle for inspection.
3-44

Highbeam On Light
This light comes on
whenever the high-beam
headlamps are on.
SeeHeadlamp High/Low-Beam Changer on page 3-9
for more information.
Fuel Gage
The fuel gage shows
approximately how much
fuel is in the tank. It
works only when the
ignition is in ON.If the fuel supply gets low, the Fuel Level Low message
will appear on the DIC and a single chime will sound.
SeeDIC Warnings and Messages on page 3-57
for more information.
Here are a few concerns some owners have had about
the fuel gage. All of these situations are normal and
do not indicate that anything is wrong with the fuel gage:
At the gas station the gas pump shuts off before
the gage reads full.
The gage may change when you turn, stop quickly
or accelerate quickly.
It takes a little more or less fuel to ll the tank than
the gage indicated. For example, the gage may
have indicated that the tank was half full, but
it actually took a little more or less than half the
tank’s capacity to ll the tank.
3-47

Status of Vehicle Systems
You can view the status of several vehicle systems
using the DIC.
Vehicle Information Menu
To access this menu, press the up or down arrow on
the INFO switch located to the right of the display.
The following items are available when the ignition is in
RUN. These items will not be available when the
ignition is in accessory. The tire pressure menu items
are only available if your vehicle has the Tire Pressure
Monitor (TPM) System:
OUTSIDE TEMP
MI TRIP A*
MI TRIP B*
MILES RANGE
MPG AVG*
MPG INST
GAL FUEL USED*
AVG MPH*
TIMER*
BATTERY VOLTS
ENGINE OIL LIFE*
TRANS FLUID LIFE*
PSI LF TIRE
PSI RF TIRE
PSI RR TIRE
PSI LR TIRE
BLANK LINE
*These items can be reset. Each one must be reset
individually. For a detailed description of the menu items
and how to reset them, see “Vehicle Information
Menu Item Descriptions” later in this section.
You can view any of these items at any time, but only
one item can be displayed at a time.
3-49

Vehicle Information Menu Item
Descriptions
The following paragraphs contain a more detailed
description of each menu item:
OUTSIDE TEMP:If you select this item, the current
outside temperature is displayed at the top of the
screen. It will be in either degrees Fahrenheit or degrees
Celsius depending upon whether the system is set for
English or metric units. If you wish to change the
units, seeDIC Main Menu on page 3-53.
MI TRIP A and B:For information on the trip
odometers, seeTrip Odometers on page 3-35.
MILES RANGE:If you select this item, the approximate
number of remaining miles or kilometers you can
drive without refueling is displayed. This estimate is
based on the current driving conditions and will change
if the driving conditions change. For example, if you
are driving in traffic making frequent stops, the display
may read one number, but if you enter the freeway,
the number may change even though you still have the
same amount of gas in the gas tank. This is because
different driving conditions produce different fuel
economies. Generally, freeway driving produces better
fuel economy than city driving.If your vehicle is low on fuel, the Fuel Level Low
message will be displayed. See “Fuel Level Low” under
DIC Warnings and Messages on page 3-57for more
information.
MPG AVG:If you select this item, the approximate
average miles per gallon (mpg) or Liters per
100 kilometers (L/100km) is displayed. This number is
calculated based on the number of mpg (L/100km)
recorded since the last time this menu item was reset.
To reset the MPG AVG, press the CLR button located to
the right of the screen. The display will return to zero.
MPG INST:If you select this item, the current fuel
economy is displayed. This number re ects only the fuel
economy that the vehicle has right now and will
change frequently as driving conditions change. Unlike
average fuel economy, this menu item cannot be
reset.
GAL FUEL USED:If you select this item, the number
of gallons or liters of fuel used since the last reset of this
menu item is displayed.
To reset GAL FUEL USED, press the CLR button
located to the right of the screen. The display will
return to zero.
3-50

Engine Coolant Hot – AC
(Air Conditioning) Off
This message displays when the engine coolant
becomes hotter than the normal operating temperature.
To avoid added strain on a hot engine, the air
conditioning compressor is automatically turned off.
When the coolant temperature returns to normal, the air
conditioning compressor will turn back on. You can
continue to drive your vehicle.
If this message continues to appear, have the system
repaired by your GM dealer as soon as possible to avoid
compressor damage.
Engine Coolant Hot – Idle Engine
This message will appear when the engine coolant
temperature is too hot. Stop and allow the vehicle to idle
until it cools down.
Notice:If you drive your vehicle while the engine is
overheating, severe engine damage may occur. If
an overheat warning appears on the instrument
panel cluster and/or DIC, stop the vehicle as soon
as possible. Do not increase the engine speed above
normal idling speed. SeeEngine Overheating on
page 5-26for more information.
Engine Overheated – Stop Engine
This message will appear when the engine has
overheated. Stop the vehicle and turn the engine off
immediately to avoid severe engine damage. See
Engine Overheating on page 5-26. A chime will also
sound when this message is displayed.
Notice:If you drive your vehicle while the engine is
overheating, severe engine damage may occur. If
an overheat warning appears on the instrument
panel cluster and/or DIC, stop the vehicle as soon
as possible. Do not increase the engine speed above
normal idling speed. SeeEngine Overheating on
page 5-26for more information.
Engine Power Reduced
This message informs you that the vehicle is reducing
engine power because the transmission is being
placed in gear under conditions that may cause damage
to the vehicle’s engine or transmission. This also can
affect the vehicle’s ability to accelerate.
Fuel Level Low
When this message appears on the display, it means
that your vehicle is low on fuel. You should re ll the tank
as soon as possible. A single chime will sound when
this message is displayed.
3-60

Service AC (Air Conditioning) System
This message appears when the electronic sensors that
control the air conditioning and heating systems are
no longer working. Have the climate control system
serviced by your GM dealer if you notice a drop
in heating and air conditioning efficiency.
Service Air Bag
There is a problem with the air bag system when this
message appears. Have your vehicle serviced at
your GM dealer immediately. SeeAirbag Readiness
Light on page 3-37for more information.
Service Charging System
This message will display when a problem with the
charging system has been detected. Have your vehicle
serviced at your GM dealer.
Service Electrical System
This message will display if an electrical problem has
occurred within the Powertrain Control Module (PCM) or
the ignition switch. Have your vehicle serviced at your
GM dealer.
Service Fuel System
The Powertrain Control Module (PCM) has detected a
problem within the fuel system when this message
appears. Have your vehicle serviced at your GM dealer.
Service Idle Control
A problem with the idle control has occurred when this
message displays. Have your vehicle serviced at
your GM dealer.
Service Stability System Message
Your vehicle is equipped with a vehicle stability
enhancement system called StabiliTrak®.
SeeStabiliTrak
®System on page 4-11. The Service
Stability System message will be displayed if there has
been a problem detected with StabiliTrak
®.
If the Service Stability System message comes on while
you are driving, pull off the road as soon as possible
and stop carefully. Try resetting the system by turning
the ignition off then back on. If the Service Stability
System message still stays on or comes back on again
while you are driving, your vehicle needs service.
Have the StabiliTrak
®System inspected at your
GM dealer as soon as possible.
3-62

Theft Attempted
This message is displayed if the content theft-deterrent
system has detected a break-in attempt while you
were away from your vehicle.
Top Speed – Fuel Cut Off
This message will appear when the Engine Control
Module (ECM) detects that the maximum speed for your
vehicle has been reached. Your vehicle’s top speed is
based on the top speed rating of the tires. This ensures
that your vehicle stays in a safe operating range for
the tires.
Traction Engaged
This message will appear when the traction control
system is actively limiting wheel spin. Slippery
road conditions may exist if this message is displayed,
so adjust your driving accordingly. The message will
stay on for a few seconds after the traction control
system stops limiting wheel spin. SeeTraction Control
System (TCS) on page 4-9for more information.
Traction Suspended
This message will appear when the traction control
system has been temporarily shut off because
your vehicle’s brakes have overheated. This message
does not indicate a problem with your vehicle’s
traction control system. SeeTraction Control
System (TCS) on page 4-9for more information.
Trans (Transmission) Hot – Idle Engine
This message indicates that the transmission uid in
your vehicle is too hot. Stop the vehicle and allow it to
idle until the transmission cools down or until this
message is removed.
Turn Signal On
If you drive your vehicle for more than about
1 mile (1.6 km) with a turn signal on, this message
will appear as a reminder to turn off the turn signal.
A multiple chime will sound when this message is
displayed.
3-65

Operating Your All-Wheel-Drive
Vehicle Off Paved Roads
This off-road guide is for vehicles that have all-wheel
drive. If your vehicle does not have all-wheel drive, you
should not drive off-road unless you are on a level,
solid surface.
Many of the same design features that help make your
vehicle responsive on paved roads during poor weather
conditions — features like all-wheel drive — help make it
much better suited for off-road use. Its higher ground
clearance also helps your vehicle step over some off-road
obstacles. But your vehicle does not have features like
special underbody shielding and a transfer case low gear
range, things that are usually thought necessary for
extended or severe off-road service.
Also, seeBraking on page 4-6.
Off-road driving can be great fun. But it does have
some de nite hazards. The greatest of these is
the terrain itself.“Off-roading” means you have left the North American
road system behind. Traffic lanes are not marked.
Curves are not banked. There are no road signs.
Surfaces can be slippery, rough, uphill or downhill. In
short, you have gone right back to nature.
Off-road driving involves some new skills. And that is
why it is very important that you read this guide. You will
nd many driving tips and suggestions. These will
help make your off-road driving safer and more
enjoyable.
Before You Go Off-Roading
There are some things to do before you go out. For
example, be sure to have all necessary maintenance
and service work done. Check to make sure all
underbody shields (if equipped) are properly attached.
Is there enough fuel? Is the spare tire fully in ated? Are
the uid levels up where they should be? What are
the local laws that apply to off-roading where you will be
driving? If you do not know, you should check with
law enforcement people in the area. Will you be
on someone’s private land? If so, be sure to get the
necessary permission.
4-17