2008 PONTIAC GRAND PRIX window

-(Floor/Defog):This mode directs the air between
the windshield, oor outlets and side windows.
When you select this mode, the system turns off
recirculation and runs the air-conditioning compressor
unless the outside temperature is near or below
freezing. Pressing the recirculation button, while in this
mode, will have no effect other than turning on the
indicator light.
1(Defrost):This mode directs most of the air to the
windshield, with some air directed to the side windows.
In this mode, the system will automatically turn off
the recirculation and run the air conditioning compressor,
unless the outside temperature is near or below
freezing. Pressing the recirculation button, while in this
mode, will have no affect other than turning on the
indicator light.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
The rear window defogger will only work when the
engine is running.
=(Rear Window Defogger):Press this button to
turn the rear window defogger on and off. Be sure
to clear as much snow from the rear window as possible.
The rear window defogger will turn off about 20 minutes
after the button is pressed. If turned on again, the
defogger will only run for about 20 minutes before
turning off. The defogger can also be turned off
by pressing the button again or by turning off the engine.
Do not drive the vehicle until all the windows are clear.
Notice:Do not use anything sharp on the inside
of the rear window. If you do, you could cut or
damage the warming grid, and the repairs would
not be covered by your warranty. Do not attach
a temporary vehicle license, tape, a decal or
anything similar to the defogger grid.
3-35

Compass Calibration
The compass can be manually calibrated. Only calibrate
the compass in a magnetically clean and safe location,
such as an open parking lot, where driving the vehicle
in circles is not a danger. It is suggested to calibrate
away from tall buildings, utility wires, manhole covers,
or other industrial structures, if possible.
If the DIC display does not show a heading, for example,
N for North, or the heading does not change after
making turns, there may be a strong magnetic eld
interfering with the compass. Such interference may
be caused by a magnetic CB or cell phone antenna
mount, a magnetic emergency light, magnetic note
pad holder, or any other magnetic item. Turn off
the vehicle, move the magnetic item, then turn on
the vehicle and calibrate the compass.
To adjust for compass variance and to calibrate the
compass, use the following procedure:
Compass Variance (Zone) and Calibration
Procedure
1. Do not set the compass zone when the vehicle is
moving. Only set it when the vehicle is in PARK (P).
Press the options button until COMPASS
CALIBRATION MODE displays.2. Find the vehicle’s current location and variance
zone number on the map.
Zones 1 through 15 are available.
3. Press the set/reset button to scroll through and
select the appropriate variance zone.
4. Press the options button to advance to the
calibration screen.
Do not operate any switches such as window,
sunroof, climate controls, seats, etc. during
the calibration procedure.
3-66

XM™ Satellite Radio Service
XM™ Satellite Radio Service gives digital radio
reception from coast-to-coast in the 48 contiguous
United States, and in Canada. Just as with FM,
tall buildings or hills can interfere with satellite radio
signals, causing the sound to fade in and out. In
addition, traveling or standing under heavy foliage,
bridges, garages, or tunnels may cause loss of the
XM™ signal for a period of time. The radio may
display NO SIGNAL to indicate interference.
Backglass Antenna
The AM-FM antenna is integrated with the rear window
defogger, located in the rear window. Make sure that the
inside surface of the rear window is not scratched and
that the lines on the glass are not damaged. If the inside
surface is damaged, it could interfere with radio
reception. Also, for proper radio reception, the antenna
connector at the top-center of the rear window needs to
be properly attached to the post on the glass.
Notice:Using a razor blade or sharp object to clear
the inside rear window may damage the rear window
antenna and/or the rear window defogger. Repairs
would not be covered by your warranty. Do not clear
the inside rear window with sharp objects.Notice:Do not apply aftermarket glass tinting
with metallic lm. The metallic lm in some tinting
materials will interfere with or distort the incoming
radio reception. Any damage caused to your
backglass antenna due to metallic tinting materials
will not be covered by your warranty.
Because this antenna is built into the rear window,
there is a reduced risk of damage caused by car washes
and vandals.
If static is heard on the radio, when the rear window
defogger is turned on, it could mean that a defogger
grid line has been damaged and the grid line must
be repaired.
If adding a cellular telephone to your vehicle, and the
antenna needs to be attached to the glass, make
sure that you do not damage the grid lines for the
AM-FM antenna. There is enough space between the
lines to attach a cellular telephone antenna without
interfering with radio reception.
3-117

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 5-62.
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 inated to
recommended pressure?
Weather and Maps:Safe to travel?
Have up-to-date maps?
4-15

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.
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.
4-20

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 4-22.
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 5-84.
4-21

Tire Pressure Monitor Operation.....................5-72
Tire Inspection and Rotation...........................5-75
When It Is Time for New Tires.......................5-77
Buying New Tires.........................................5-78
Different Size Tires and Wheels......................5-80
Uniform Tire Quality Grading..........................5-80
Wheel Alignment and Tire Balance..................5-82
Wheel Replacement......................................5-82
Tire Chains..................................................5-84
If a Tire Goes Flat........................................5-85
Tire Sealant and Compressor Kit (GXP)...........5-86
Changing a Flat Tire.....................................5-96
Removing the Spare Tire and Tools................5-98
Removing the Flat Tire and Installing the
Spare Tire..............................................5-100
Storing a Flat or Spare Tire and Tools...........5-107
Compact Spare Tire....................................5-109
Appearance Care..........................................5-109
Interior Cleaning.........................................5-109
Fabric/Carpet..............................................5-111
Leather......................................................5-112
Ultra Lux Suede..........................................5-113
Instrument Panel, Vinyl, and Other Plastic
Surfaces.................................................5-113
Care of Safety Belts....................................5-114Weatherstrips.............................................5-114
Washing Your Vehicle..................................5-114
Cleaning Exterior Lamps/Lenses....................5-115
Finish Care................................................5-115
Windshield and Wiper Blades.......................5-116
Aluminum Wheels.......................................5-116
Tires.........................................................5-117
Sheet Metal Damage...................................5-117
Finish Damage...........................................5-117
Underbody Maintenance...............................5-117
Chemical Paint Spotting...............................5-118
Vehicle Care/Appearance Materials................5-118
Vehicle Identication.....................................5-119
Vehicle Identication Number (VIN)................5-119
Service Parts Identication Label...................5-120
Electrical System..........................................5-120
Add-On Electrical Equipment.........................5-120
Headlamp Wiring........................................5-120
Windshield Wiper Fuses...............................5-121
Power Windows and Other Power Options......5-121
Fuses and Circuit Breakers..........................5-121
Instrument Panel Fuse Block........................5-122
Underhood Fuse Block................................5-124
Capacities and Specications........................5-128
Section 5 Service and Appearance Care
5-2

If an overheat warning occurs without any 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 heater at the highest setting and the fan at
the highest speed and open the windows as
necessary.
If the overheat warning no longer exists, the vehicle can
be driven. Just to be safe, drive slower for about
10 minutes. If the warning does not come back on, the
vehicle can be driven normally.
If the warning continues, and you have not stopped, pull
over, stop, and park the vehicle right away.
If there is still no sign of steam, idle the engine for three
minutes while parked. If the warning is still there, 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
The overheated engine protection operating mode
allows the vehicle to be driven to a safe place in an
emergency situation. If an overheated engine condition
exists, this protection mode alternates ring groups
of cylinders to help prevent engine damage. In this
mode, there will be a signicant loss in power and engine
performance. The engine coolant temperature gage
indicator will move to the shaded area, and the engine
coolant temperature warning light will come on, showing
that an overheated engine condition exists. Driving
extended miles (km) and/or towing a trailer in the
overheated engine 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 5-15.
5-29