Keyless Access System
When the engine is started, Driver 1 or Driver 2 will
display on the screen. A message will not appear on the
screen if the driver is unknown. The number on the
back of the transmitter corresponds to driver 1 or
driver 2. The navigation system can store memory points
for drivers 1 and 2 individually. SeeKeyless Access
System on page 2-5for more information.
OnStar®System
When using the OnStar®system, the audio system will
be muted and the navigation voice prompts will be
disabled during the call. The volume of the OnStar
®call
can be adjusted by using the steering wheel volume
controls. SeeOnStar
®System on page 2-41for
more information.
Global Positioning System (GPS)
The navigation system determines the position of your
vehicle by using satellite signals, various vehicle signals,
and map data.
At times, other interferences such as the satellite
condition, road con guration, the condition of the vehicle
and/or other circumstances can interfere with the
navigation system’s ability to determine the accurate
position of the vehicle.The GPS shows the current position of your vehicle using
signals sent by the GPS Satellites of the United States
Department of Defense. When your vehicle is not
receiving signals from the satellites, a symbol will appear
on the map screen. Refer toSymbols on page 4-44.
This system may not be available or interferences may
occur if any of the following are true:
Signals are obstructed by tall buildings, trees, large
trucks, or a tunnel.
Objects are located on the rear shelf.
Satellites are being repaired or improved.
After-market glass tinting has been applied to the
vehicle’s rear windshield.
Notice:Do not apply after-market glass tinting to
the vehicle’s windows. Glass tinting will interfere
with the system’s ability to receive GPS signals and
cause the system to malfunction. You might have
to replace the window to correct the problem.
This would not be covered by your warranty.
For more information if you are experiencing a problem,
seeIf the System Needs Service on page 4-52and
Problems with Route Guidance on page 4-52.
4-50
Hydroplaning
Hydroplaning is dangerous. Water can build up under
your vehicle’s tires so they actually ride on the
water. This can happen if the road is wet enough and
you are going fast enough. When your vehicle is
hydroplaning, it has little or no contact with the road.
There is no hard and fast rule about hydroplaning.
The best advice is to slow down when the road
is wet.
Other Rainy Weather Tips
Besides slowing down, other wet weather driving tips
include:
Allow extra following distance.
Pass with caution.
Keep windshield wiping equipment in good shape.
Keep the windshield washer uid reservoir lled.
Have good tires with proper tread depth. SeeTires
on page 6-52.
Before Leaving on a Long Trip
To prepare your vehicle for a long trip, consider having
it serviced by your dealer/retailer before departing.
Things to check on your own include:
Windshield Washer Fluid:Reservoir full?
Windows clean — inside and outside?
Wiper Blades:In good shape?
Fuel, Engine Oil, Other Fluids:All levels checked?
Lamps:Do they all work and are lenses clean?
Tires:Are treads good? Are tires in ated to
recommended pressure?
Weather and Maps:Safe to travel?
Have up-to-date maps?
5-15
You can run the engine to keep warm, but be careful.
{CAUTION:
Snow can trap exhaust gases under your
vehicle. This can cause deadly CO (carbon
monoxide) gas to get inside. CO could
overcome you and kill you. You cannot see it
or smell it, so you might not know it is in your
vehicle. Clear away snow from around the
base of your vehicle, especially any that is
blocking the exhaust pipe. And check around
again from time to time to be sure snow does
not collect there.
Open a window just a little on the side of the
vehicle that is away from the wind. This will
help keep CO out.
5-20
Run your engine only as long as you must. This saves
fuel. When you run the engine, make it go a little
faster than just idle. That is, push the accelerator
slightly. This uses less fuel for the heat that you get
and it keeps the battery charged. You will need a
well-charged battery to restart the vehicle, and possibly
for signaling later on with the headlamps. Let the
heater run for a while.
Then, shut the engine off and close the window almost
all the way to preserve the heat. Start the engine
again and repeat this only when you feel really
uncomfortable from the cold. But do it as little as
possible. Preserve the fuel as long as you can. To help
keep warm, you can get out of the vehicle and do
some fairly vigorous exercises every half hour or so until
help comes.If Your Vehicle is Stuck in Sand,
Mud, Ice, or Snow
Slowly and cautiously spin the wheels to free your
vehicle when stuck in sand, mud, ice, or snow. See
Rocking Your Vehicle to Get It Out on page 5-22.
If your vehicle has a traction system, it can often help to
free a stuck vehicle. Refer to your vehicle’s traction
system in the Index. If the stuck condition is too severe
for the traction system to free the vehicle, turn the
traction system off and use the rocking method.
{CAUTION:
If you let your vehicle’s tires spin at high
speed, they can explode, and you or others
could be injured. The vehicle can overheat,
causing an engine compartment re or other
damage. Spin the wheels as little as possible
and avoid going above 35 mph (55 km/h) as
shown on the speedometer.
For information about using tire chains on your vehicle,
seeTire Chains on page 6-73.
5-21
Tire Inspection and Rotation...........................6-65
When It Is Time for New Tires.......................6-66
Buying New Tires.........................................6-67
Different Size Tires and Wheels......................6-68
Uniform Tire Quality Grading..........................6-69
Wheel Alignment and Tire Balance..................6-70
Wheel Replacement......................................6-70
Tire Chains..................................................6-73
Lifting Your Vehicle.......................................6-74
If a Tire Goes Flat........................................6-78
Appearance Care............................................6-80
Interior Cleaning...........................................6-80
Fabric/Carpet...............................................6-81
Leather.......................................................6-82
Instrument Panel, Vinyl, and Other
Plastic Surfaces........................................6-82
Wood Panels...............................................6-82
Speaker Covers............................................6-82
Care of Safety Belts......................................6-83
Weatherstrips...............................................6-83
Washing Your Vehicle...................................6-83
Cleaning Exterior Lamps/Lenses.....................6-84Finish Care..................................................6-84
Windshield and Wiper Blades.........................6-85
Aluminum or Chrome-Plated Wheels
and Trim..................................................6-85
Tires...........................................................6-86
Sheet Metal Damage.....................................6-86
Finish Damage.............................................6-87
Underbody Maintenance................................6-87
Fiberglass Springs (Composite Springs)...........6-87
Chemical Paint Spotting.................................6-87
Vehicle Care/Appearance Materials..................6-88
Vehicle Identi cation......................................6-89
Vehicle Identi cation Number (VIN).................6-89
Service Parts Identi cation Label.....................6-89
Electrical System............................................6-89
Add-On Electrical Equipment..........................6-89
Windshield Wiper Fuses................................6-90
Power Windows and Other Power Options.......6-90
Fuses and Circuit Breakers............................6-90
Instrument Panel Fuse Block..........................6-90
Underhood Fuse Block..................................6-94
Capacities and Speci cations..........................6-97
Section 6 Service and Appearance Care
6-2
If you get the overheat warning with no sign of steam,
try this for a minute or so:
1. In heavy traffic, let the engine idle in NEUTRAL (N)
while stopped. If it is safe to do so, pull off the road,
shift to PARK (P) or NEUTRAL (N) and let the
engine idle.
2. Set the climate controls to the highest heat setting
and fan speed and open the windows as necessary.
If you no longer have the overheat warning, you
can drive. Just to be safe, drive slower for about
10 minutes. If the warning does not come back on,
you can drive normally.
If the warning continues, pull over, stop, and park your
vehicle right away.
If there is still no sign of steam, idle the engine for
three minutes while you are parked. If you still have the
warning, turn off the engine and get everyone out of
the vehicle until it cools down. Also, see “Overheated
Engine Protection Operating Mode” later in this section.
You may decide not to lift the hood but to get service
help right away.Overheated Engine Protection
Operating Mode
This operating mode allows your vehicle to be driven to
a safe place in an emergency situation. If an overheated
engine condition exists and the DIC message ENGINE
HOT, STOP ENGINE is displayed, an overheat
protection mode which alternates ring groups of
cylinders helps prevent engine damage. In this mode,
you will notice a signi cant loss in power and engine
performance. Driving extended miles (km) in the
overheat protection mode should be avoided.
Notice:After driving in the overheated engine
protection operating mode, to avoid engine damage,
allow the engine to cool before attempting any
repair. The engine oil will be severely degraded.
Repair the cause of coolant loss, change the oil
and reset the oil life system. SeeEngine Oil
on page 6-16.
6-29
Battery
Your vehicle has a maintenance free battery. When it is
time for a new battery, see your dealer/retailer for
one that has the replacement number shown on the
original battery’s label.
For battery replacement, see your dealer/retailer or the
service manual. To purchase a service manual, see
Service Publications Ordering Information on page 8-16.
Warning:Battery posts, terminals, and related
accessories contain lead and lead compounds,
chemicals known to the State of California to cause
cancer and reproductive harm. Wash hands after
handling.
Vehicle Storage
{CAUTION:
Batteries have acid that can burn you and gas
that can explode. You can be badly hurt if
you are not careful. SeeJump Starting on
page 6-41for tips on working around a battery
without getting hurt.Infrequent Usage: If you drive your vehicle infrequently,
remove the black, negative (−) cable from the battery.
This will help keep the battery from running down.
See “Power Window Initialization” inPower Windows
on page 2-17.
Extended Storage: For extended storage of your vehicle,
remove the black, negative (−) cable from the battery or
use a battery trickle charger. This will help maintain the
charge of the battery over an extended period of time.
You must close all doors and the trunk before
reconnecting the battery. After reconnecting the battery,
you must press the unlock button on the keyless
access transmitter. Failure to follow this procedure could
result in the alarm sounding. Pressing unlock on the
keyless access transmitter will stop the alarm.
6-40
A. Heavy, Unpainted Metal Engine Part
B. Good Battery
C. Dead BatteryTo disconnect the jumper cables from both vehicles,
do the following:
1. Disconnect the black negative (−) cable from the
vehicle that had the dead battery.
2. Disconnect the black negative (−) cable from the
vehicle with the good battery.
3. Disconnect the red positive (+) cable from the
vehicle with the good battery.
4. Disconnect the red positive (+) cable from the other
vehicle.
Perform “Power Window Initialize” steps underPower
Windows on page 2-17, if the vehicle has experienced
power loss.
Jumper Cable Removal
6-45