2008 PONTIAC GRAND PRIX heating

Remote Vehicle Start
Your vehicle may have a remote starting feature that
allows you to start the engine from outside the vehicle.
It may also start the vehicle’s heating or air conditioning
systems and rear window defogger. When the remote
start system is active and the vehicle has an automatic
climate control system, it will automatically regulate
the inside temperature. Normal operation of these
systems will return after the ignition key is turned to
ON/RUN.
Laws in some communities may restrict the use of
remote starters. For example, some laws may require
a person using remote start to have the vehicle in
view when doing so. Check local regulations for
any requirements on remote starting of vehicles.
Do not use the remote start feature if your vehicle is
low on fuel. Your vehicle may run out of fuel.
If your vehicle has the remote start feature, the RKE
transmitter functions will have an increased range
of operation. However, the range may be less while
the vehicle is running.There are other conditions which can affect the
performance of the transmitter, seeRemote Keyless
Entry (RKE) System on page 2-3for additional
information.
/(Remote Start):This button will be on the RKE
transmitter if you have remote start.
To start the vehicle using the remote start feature:
1. Aim the transmitter at the vehicle.
2. Press and release the transmitter’s lock button, then
immediately press and hold the transmitter’s remote
start button for about four seconds or until the
vehicle’s turn signal lamps ash. The doors will lock.
When the vehicle starts, the parking lamps turn on
and remain on while the engine is running, and
the DIC will display REMOTE START ACTIVE
PRESS HAZARD SWITCH TO CANCEL.
The remote start feature provides two separate starts
per ignition cycle, each with 10 minutes of engine running
time, or one start with a time extension. The rst start
must expire or be canceled to get two separate
10 minute starts.
2-7

Trunk
{CAUTION:
It can be dangerous to drive with the trunk
lid open because carbon monoxide (CO) gas
can come into your vehicle. You cannot see or
smell CO. It can cause unconsciousness and
even death. If you must drive with the trunk
lid open or if electrical wiring or other cable
connections must pass through the seal
between the body and the trunk lid:
Make sure all other windows are shut.
Turn the fan on your heating or cooling
system to its highest speed and select
the control setting that will force outside
air into your vehicle. See Climate Control
System.
If you have air outlets on or under the
instrument panel, open them all the way.
SeeEngine Exhaust on page 2-36.To unlock and open the trunk from the outside,
press the trunk button on the remote keyless entry
transmitter. SeeRemote Keyless Entry (RKE) System
Operation on page 2-4.
To open the trunk from the inside, use the power door
lock switch located on the driver’s or front passenger’s
door. See “Remote Trunk Release” following.
The vehicle must be in PARK (P) in order for the
trunk to open.
2-14

Notice:Leaving electrical equipment plugged in for
an extended period of time while the vehicle is off
will drain the battery. Power is always supplied
to the outlets. Always unplug electrical equipment
when not in use and do not plug in equipment
that exceeds the maximum 20 ampere rating.
Certain electrical accessories may not be compatible
with the accessory power outlet and could result
in blown vehicle or adapter fuses. See your dealer/
retailer for additional information on accessory
power outlets.
Notice:Adding any electrical equipment to your
vehicle may damage it or keep other components
from working as they should. The repairs would not
be covered by your warranty. Do not use equipment
exceeding maximum amperage rating of 20 amperes.
Check with your dealer/retailer before adding
electrical equipment.
When adding electrical equipment, be sure to follow
the proper installation instructions included with it.
Notice:Improper use of the power outlet can
cause damage not covered by your warranty.
Do not hang any type of accessory or accessory
bracket from the plug because the power outlets
are designed for accessory power plugs only.Ashtray(s) and Cigarette Lighter
Your vehicle may have a removable muffin tin ashtray
and cigarette lighter. The muffin tin ashtray can be
placed into the front center console cupholder. To use
the lighter, located on the center console, push it in
all the way and let go. When it is ready, it will pop back
out by itself.
Notice:Holding a cigarette lighter in while it is
heating does not let the lighter back away from
the heating element when it is hot. Damage from
overheating can occur to the lighter or heating
element, or a fuse could be blown. Do not hold
a cigarette lighter in while it is heating.
Notice:If you put papers, pins, or other ammable
items in the ashtray, hot cigarettes or other
smoking materials could ignite them and possibly
damage your vehicle. Never put ammable items
in the ashtray.
3-27

Climate Controls
Climate Control System
The climate control system allows manual control of the
heating, cooling, and ventilation in the vehicle.
Fan
9
(Fan):Turn the knob by this symbol, located on
the left side of the climate control panel, clockwise
or counterclockwise to increase or decrease the fan
speed. The fan speed will be temporarily reduced
between the transition to a new mode. The fan will
resume the original speed when the transition to the
new mode is complete.
9(Off):Turn the knob to this position to turn the
climate control system off. Only the heated seat and/or
rear defrost can be operated when the fan is off.
Mode
Turn the middle knob to select the following modes:
H(Vent) (Outside Air):This mode directs outside air
to the instrument panel outlets. If driving in city traffic,
and the vehicle is stopped and idling, or the weather is
hot, press the recirculation button. To prevent the air
inside the vehicle from becoming stale, be sure to turn
off recirculation periodically.
)(Bi-Level):This mode directs half of the air to the
instrument panel outlets, and the remaining air to the oor
outlets. Some air may be directed toward the windshield.
Slightly cooler air is directed to the instrument panel
outlets and warmer air is directed to the oor outlets.
6(Floor):This mode directs most of the air to the
oor outlets with some air directed toward the side
window outlets and a little air directed to the windshield.
In this mode, the system will automatically use outside
air. The air conditioning compressor will be engaged
unless the outside temperature is 40°F (4°C) or below.
3-28

Dual Automatic Climate Control
System
With this system you can control the heating, cooling,
and ventilation for your vehicle.
Automatic Operation
AUTO (Automatic):Turn both the fan and mode knob to
AUTO for automatic control of the inside temperature, the
air delivery mode and the fan speed. You may notice a
delay of two to three minutes before the fan comes on
when the automatic operation is used in cold weather.For the automatic system to function, the temperature
must be set between 60°F (15°C) and 90°F (32°C).
1. Adjust the temperature to a comfortable setting.
2. Press the PASS button to turn the passenger
climate control system on and off. When the
passenger system is off, the driver’s temperature
setting is also used for the passenger and the
passenger display is off.
In cold weather, the system will start at reduced fan
speeds to avoid blowing cold air into your vehicle
until warmer air is available. The system will
start out blowing air at the oor but may change
modes automatically as the vehicle warms up
to maintain the chosen temperature setting. The
length of time needed for the air to warm up
will depend on the outside temperature and the
length of time that has elapsed since your vehicle
was last driven.
3. Wait for the system to regulate. This may take from
10 to 30 minutes. Then adjust the temperature,
if necessary.
Do not cover the solar sensor located in the center
of the instrument panel, near the windshield. For more
information on the solar sensor, see “Sensors” later
in this section.
3-32

HOT COOLANT
Notice:If the HOT COOLANT warning message
appears on the DIC display, stop the vehicle as soon
as possible. Do not increase the engine speed
above normal idling speed. Severe engine damage
can result from driving a vehicle with an overheated
engine. SeeEngine Overheating on page 5-27for
more information.
This symbol comes on
with this message.
This message displays when the engine coolant
temperature is too hot. The engine coolant temperature
warning light also appears on the instrument panel
cluster. Also, the engine coolant temperature gage
will read in the red or hot area. SeeEngine Coolant
Temperature Warning Light on page 3-48andEngine
Coolant Temperature Gage on page 3-49for more
information.
To avoid added strain, turn off the air conditioner if it is
on. When the coolant temperature returns to normal,
the air conditioner can be turned back on.This message displays only while the ignition is in
ON/RUN. A chime sounds continuously when this
message is displayed. Press the set/reset button
to acknowledge this message and to clear it from
the screen.
This message continues to display if it has not
been acknowledged when the engine is turned off.
It also re-displays for three seconds if the message has
been acknowledged, but the condition still exists
when the engine is turned off.
If the condition still exists, the message re-appears
when the engine is turned on.
HOT ENGINE OIL. REDUCE SPEED
On some vehicles, this message displays when
the vehicle’s engine oil is above the proper engine
operating temperature. Reduce the speed of the vehicle.
If this message continues to display, have the vehicle
serviced by your dealer/retailer as soon as possible.
A chime sounds continuously when this message
is displayed. Press the set/reset button to acknowledge
this message and to clear it from the screen.
If the condition still exists, the message re-appears
when the engine is turned on.
3-72

The vehicle has bulb warning lights. When a trailer
lighting system is plugged into the vehicle’s lighting
system, its bulb warning lights may not indicate if one of
the lamps goes out. So, when a trailer lighting system
is plugged in, be sure to check the vehicle and
trailer lamps from time to time to be sure they are all
working. Once the trailer lamps have been disconnected,
the bulb warning lights can once again indicate if one
of the vehicle lamps is out.
Driving On Grades
Reduce speed and shift to a lower gear before starting
down a long or steep downgrade. If the vehicle is
not shifted down, the brakes may have to be used so
much that they would get hot and no longer work well.
On a long uphill grade, shift down and reduce the
vehicle’s speed to around 45 mph (70 km/h) to reduce
the possibility of engine and transmission overheating.
If the vehicle has overdrive, it may be driven in
THIRD (3) instead of DRIVE (D).
Parking on Hills
{CAUTION:
You really should not park your vehicle, with
a trailer attached, on a hill. If something goes
wrong, your rig could start to move. People
can be injured, and both your vehicle and the
trailer can be damaged.
But if the rig ever has to be parked on a hill, here is
how to do it:
1. Apply the regular brakes, but do not shift into
PARK (P) yet.
2. Have someone place chocks under the trailer
wheels.
3. When the wheel chocks are in place, release the
regular brakes until the chocks absorb the load.
4. Reapply the regular brakes. Then apply the
parking brake, and then shift to PARK (P).
5. Release the regular brakes.
4-35

When You Are Ready to Leave After
Parking on a Hill
1. Apply the regular brakes and hold the pedal
down while you:
Start the engine
Shift into a gear
Release the parking brake
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store
the chocks.
Maintenance When Trailer Towing
The vehicle will need service more often when it
pulls a trailer. SeeScheduled Maintenance on page 6-4
for more information. Things that are especially
important in trailer operation are automatic transmission
uid, which should not be overlled, engine oil, drive
belts, cooling, and brake systems. Each of these
is covered in this manual, and the Index will help locate
them quickly. If trailering, it is a good idea to review
this information before starting on a trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Engine Cooling When Trailer Towing
The cooling system may temporarily overheat during
severe operating conditions. SeeEngine Overheating
on page 5-27.
4-36