Pontiac Grand Prix (2005 year). Instruction

Rocking Your Vehicle to Get It Out

First, turn your steering wheel left and right. That
will clear the area around your front wheels. If your
vehicle has traction control, you should turn your traction
control system off. See Traction Control System
(TCS) on page 4-9. Then shift back and forth between
REVERSE (R) and a forward gear, spinning the
wheels as little as possible. Release the accelerator
pedal while you shift, and press lightly on the accelerator
pedal when the transaxle is in gear. By slowly spinning
your wheels in the forward and reverse directions,
you will cause a rocking motion that may free your
vehicle. If that does not get you out after a few tries,
you may need to be towed out. If you do need to
be towed out, see Towing Your Vehicle on page 4-38.

Loading Your Vehicle

It is very important to know how much weight your vehicle
can carry. Two labels on your vehicle show how much
weight it may properly carry, the Tire and Loading
Information label and the Vehicle Certification label.

{

CAUTION:

Do not load your vehicle any heavier than the
Gross Vehicle Weight Rating (GVWR), or either
the maximum front or rear Gross Axle Weight
Rating (GAWR). If you do, parts on your
vehicle can break, and it can change the way
your vehicle handles. These could cause you
to lose control and crash. Also, overloading
can shorten the life of your vehicle.

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Tire and Loading Information Label

A vehicle specific Tire and Loading Information label is
attached to the vehicle’s center pillar (B-pillar). With
the driver’s door open, you will find the label attached
below the door lock post (striker). The tire and
loading information label lists the number of occupant
seating positions (A), and the maximum vehicle capacity
weight (B) in kilograms and pounds.

The Tire and Loading Information label also lists the tire
size of the original equipment tires (C) and the
recommended cold tire inflation pressures (D). For more
information on tires and inflation, see Tires on
page 5-58 and Inflation - Tire Pressure on page 5-64.

There is also important loading information on the
Certification label. It tells you the Gross Vehicle Weight
Rating (GVWR) and the Gross Axle Weight Rating
(GAWR) for the front and rear axle, see “Certification
Label” later in this section.

Steps for Determining Correct Load Limit

1. Locate the statement “The combined weight of

occupants and cargo should never exceed
XXX kg or XXX pounds” on your vehicle’s placard.

2. Determine the combined weight of the driver and

passengers that will be riding in your vehicle.

3. Subtract the combined weight of the driver and

passengers from XXX kilograms or XXX pounds.

4. The resulting figure equals the available amount of

cargo and luggage load capacity. For example, if
the “XXX” amount equals 1400 lbs and there will be
five 150 lb passengers in your vehicle, the amount
of available cargo and luggage load capacity is
650 lbs (1400

−

750 (5 x 150) = 650 lbs).

Label Example

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5. Determine the combined weight of luggage and

cargo being loaded on the vehicle. That weight
may not safely exceed the available cargo
and luggage load capacity calculated in Step 4.

6. If your vehicle will be towing a trailer, the load from

your trailer will be transferred to your vehicle.
Consult this instruction to determine how this reduces
the available cargo and luggage load capacity
for your vehicle.

If your vehicle can tow a trailer, see Towing a Trailer on
page 4-40 for important information on towing a
trailer, towing safety rules, and trailering tips.

Item

Description

Total

Maximum Vehicle
Capacity Weight
for Example 1

1,000 lbs (453 kg)

Subtract
Occupant Weight
150 lbs (68 kg)

300 lbs (136 kg)

Available Occupant
and Cargo Weight

700 lbs (317 kg)

Example 1

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Item

Description

Total

Maximum Vehicle
Capacity Weight
for Example 2

1,000 lbs (453 kg)

Subtract
Occupant Weight
150 lbs (68 kg)

750 lbs (340 kg)

Available
Cargo Weight

250 lbs (113 kg)

Item

Description

Total

Maximum Vehicle
Capacity Weight
for Example 3

1,000 lbs (453 kg)

Subtract
Occupant Weight
200 lbs (91 kg)

1,000 lbs (453 kg)

Available
Cargo Weight

0 lbs (0 kg)

Refer to your vehicle’s tire and loading information label
for specific information about your vehicle’s maximum
vehicle capacity weight and seating positions. The
combined weight of the driver, passengers, and cargo
should never exceed your vehicle’s maximum vehicle
capacity weight.

Example 2

Example 3

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Certification Label

A vehicle specific Certification label is found on the rear
edge of the driver’s door.

The label shows the gross weight capacity of your
vehicle, called the Gross Vehicle Weight Rating
(GVWR). The GVWR includes the weight of the vehicle,
all occupants, fuel, and cargo.

Never exceed the GVWR for your vehicle or the Gross
Axle Weight Rating (GAWR) for either the front or
rear axle.

If the vehicle is going to carry a heavy load, spread it out.
Do not carry more than 167 lbs (75 kg) in your trunk.

{

CAUTION:

Notice: Overloading your vehicle may cause
damage. Repairs would not be covered by your
warranty. Do not overload your vehicle.

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If things like suitcases, tools, packages, or anything else
are put inside the vehicle, they will go as fast as the
vehicle goes. If you have to stop or turn quickly,
or if there is a crash, they will keep going.

{

CAUTION:

Things you put inside your vehicle can strike
and injure people in a sudden stop or turn, or
in a crash.

•

Put things in the trunk of your vehicle. In a
trunk, put them as far forward as you can.
Try to spread the weight evenly.

•

Never stack heavier things, like suitcases,
inside the vehicle so that some of them
are above the tops of the seats.

•

Do not leave an unsecured child restraint
in your vehicle.

•

When you carry something inside the
vehicle, secure it whenever you can.

•

Do not leave a seat folded down unless
you need to.

Towing

Towing Your Vehicle

Consult your dealer or a professional towing service if
you need to have your disabled vehicle towed. See
Roadside Assistance Program on page 7-6.

If you want to tow your vehicle behind another vehicle
for recreational purposes (such as behind a motorhome),
see “Recreational Vehicle Towing” following.

Recreational Vehicle Towing

Recreational vehicle towing means towing your vehicle
behind another vehicle – such as behind a motorhome.
The two most common types of recreational vehicle
towing are known as dinghy towing, towing your vehicle
with all four wheels on the ground, and dolly towing,
towing your vehicle with two wheels on the ground and
two wheels up on a device known as a dolly.

With the proper preparation and equipment, many
vehicles can be towed in these ways. See “Dinghy
Towing” and “Dolly Towing,” following.

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Here are some important things to consider before you
do recreational vehicle towing:

•

What is the towing capacity of the towing vehicle?
Be sure to read the tow vehicle manufacturer’s
recommendations.

•

How far will the vehicle be towed? Some vehicles
have restrictions on how far and how long they
can tow.

•

Do you have the proper towing equipment? See
your dealer or trailering professional for additional
advice and equipment recommendations.

•

Is the vehicle ready to be towed? Just as you would
prepare your vehicle for a long trip, you will want to
make sure the vehicle is prepared to be towed.
See Before Leaving on a Long Trip on page 4-24.

Dinghy Towing

Notice: If you tow your vehicle with all four wheels
on the ground, the drivetrain components could
be damaged. The repairs would not be covered by
your warranty. Do not tow your vehicle with all
four wheels on the ground.

The vehicle was not designed to be towed with all four
wheels on the ground. If the vehicle must be towed,
use a dolly. See “Dolly Towing” following for more
information.

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Dolly Towing

The vehicle can be towed using a dolly. To tow your
vehicle using a dolly, follow these steps:

1. Put the front wheels on the dolly.

2. Put the vehicle in PARK (P).

3. Set the parking brake and then remove the key.

4. Clamp the steering wheel in a straight-ahead

position.

5. Release the parking brake.

Towing a Trailer

{

CAUTION:

If you do not use the correct equipment and
drive properly, you can lose control when you
pull a trailer. For example, if the trailer is too
heavy, the brakes may not work well — or even
at all. You and your passengers could be
seriously injured. You may also damage your
vehicle; the resulting repairs would not be
covered by your warranty. Pull a trailer only if
you have followed all the steps in this section.
Ask your dealer for advice and information
about towing a trailer with your vehicle.

The vehicle can tow a trailer if it is equipped with the
proper trailer towing equipment. To identify what
the vehicle trailering capacity is for the vehicle, read the
information in “Weight of the Trailer” that appears
later in this section. But trailering is different than just
driving the vehicle by itself. Trailering means changes in
handling, durability, and fuel economy. Successful,
safe trailering takes correct equipment, and it has to be
used properly.

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That is the reason for this part. In it are many
time-tested, important trailering tips and safety rules.
Many of these are important for your safety and that of
your passengers. So please read this section carefully
before pulling a trailer.

Load-pulling components such as the engine, transaxle,
wheel assemblies, and tires are forced to work harder
against the drag of the added weight. The engine
is required to operate at relatively higher speeds and
under greater loads, generating extra heat. The
trailer also adds considerably to wind resistance,
increasing the pulling requirements.

If You Do Decide To Pull A Trailer

Here are some important points:

•

There are many different laws, including speed limit
restrictions, having to do with trailering. Make sure
your rig will be legal, not only where you live
but also where you will be driving. A good source
for this information can be state or provincial police.

•

Consider using a sway control. Ask a hitch dealer
about sway controls.

•

Do not tow a trailer at all during the first
1,000 miles (1 600 km) the new vehicle is driven.
The engine, axle, or other parts could be damaged.

•

Then, during the first 500 miles (800 km) that
the vehicle tows a trailer, do not drive over
50 mph (80 km/h) and do not make starts at full
throttle. This helps the engine and other parts of
the vehicle wear in at the heavier loads.

•

Obey speed limit restrictions when towing a
trailer. Do not drive faster than the maximum
posted speed for trailers, or no more than
55 mph (90 km/h), to save wear on the
vehicle’s parts.

Three important considerations have to do with weight:

•

The weight of the trailer

•

The weight of the trailer tongue

•

The total weight on your vehicle’s tires

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Weight of the Trailer

How heavy can a trailer safely be?

It should never weigh more than 1,000 lbs (454 kg).
But even that can be too heavy.

It depends on how you plan to use your rig. For example,
speed, altitude, road grades, outside temperature, and
how much the vehicle is used to pull a trailer are all
important. And, it can also depend on any special
equipment that is on the vehicle.

Ask your dealer for our trailering information or advice,
or write us at:

Pontiac-GMC Customer Assistance Center
P.O. Box 33172
Detroit, MI 48232-5172

In Canada, write to:

General Motors of Canada Limited
Customer Communication Centre, 163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7

Weight of the Trailer Tongue

The tongue load (A) of any trailer is an important weight
to measure because it affects the total or gross weight
of the vehicle. The Gross Vehicle Weight (GVW)
includes the curb weight of the vehicle, any cargo in it,
and the people who will be riding in the vehicle. If
there are a lot of options, equipment, passengers and
cargo in the vehicle, it will reduce the tongue weight the
vehicle can carry, which will also reduce the trailer
weight the vehicle can tow. And if towing a trailer, the
tongue load must be added to the GVW because
the vehicle will be carrying that weight, too. See Loading
Your Vehicle on page 4-33 for more information about
your vehicle’s maximum load capacity.

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When using a weight-carrying hitch or a
weight-distributing hitch, the trailer tongue (A) should
weigh 10 to 15 percent of the total loaded trailer
weight (B).

After the trailer is loaded, weigh the trailer and then the
tongue, separately, to see if the weights are proper.
The correct weight could be achieved simply by moving
some items around in the trailer.

Total Weight on Your Vehicle’s Tires

Be sure the vehicle’s tires are inflated to the upper limit
for cold tires. These numbers can be found on the
Tire Loading Information label, that is on the inside of
the trunk lid. See Loading Your Vehicle on page 4-33.
Be sure not to go over the GVW limit for the vehicle, or
the GAWR, including the weight of the trailer tongue.
If a weight distribution hitch is used, make sure not to go
over the rear axle limit before applying the weight
distribution spring bars.

Hitches

It is important to have the correct hitch equipment.
Crosswinds, large trucks going by, and rough roads are
a few reasons why the correct hitch is needed. Here
are some rules to follow:

•

The rear bumper on the vehicle is not intended for
hitches. Do not attach rental hitches or other
bumper-type hitches to it. Use only a frame-mounted
hitch that does not attach to the bumper.

•

If any holes need to be made in the body of the
vehicle to install a trailer hitch, then be sure to seal
the holes later when the hitch is removed. If the holes
are not sealed, deadly carbon monoxide (CO) from
the exhaust can get into the vehicle. See Engine
Exhaust on page 2-33. Dirt and water can, too.

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Safety Chains

Always attach chains between the vehicle and the
trailer. Cross the safety chains under the tongue of the
trailer so that the tongue will not drop to the road if
it becomes separated from the hitch. Instructions about
safety chains may be provided by the hitch manufacturer
or by the trailer manufacturer. Follow the manufacturer’s
recommendation for attaching safety chains and do
not attach them to the bumper. Always leave just
enough slack so the rig can be turned around. And,
never allow safety chains to drag on the ground.

Trailer Brakes

Because the vehicle has anti-lock brakes, do not try
to tap into the vehicle’s brake system. If this is done,
both brake systems will not work well, or at all.

Driving with a Trailer

Towing a trailer requires a certain amount of experience.
Before setting out for the open road, get to know the rig.
Acquaint yourself with the feel of handling and braking
with the added weight of the trailer. And always keep in
mind that the vehicle is now a good deal longer and not
nearly as responsive as the vehicle is by itself.

Before starting, check the trailer hitch and platform
(and attachments), safety chains, electrical connector,
lamps, tires, and mirror adjustment. If the trailer has
electric brakes, start the vehicle and trailer moving and
then apply the trailer brake controller by hand to be
sure the brakes are working. This lets you check
the electrical connection at the same time.

During your trip, check occasionally to be sure that the
load is secure, and that the lamps and any trailer
brakes are still working.

Following Distance

Stay at least twice as far behind the vehicle ahead as
when driving the vehicle without a trailer. This can
prevent situations that require heavy braking and
sudden turns.

Passing

More passing distance is needed up ahead when
towing a trailer. And, because the vehicle and trailer are
a good deal longer, distances between any vehicles
that are passed must be greater, before returning to the
proper lane.

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Backing Up

Hold the bottom of the steering wheel with one hand.
Then, to move the trailer to the left, move that hand
to the left. To move the trailer to the right, move that
hand to the right. Always back up slowly and, if possible,
have someone guide you.

Making Turns

Notice: Making very sharp turns while trailering
could cause the trailer to come in contact with the
vehicle. Your vehicle could be damaged. Avoid
making very sharp turns while trailering.

When turning with a trailer, make wider turns than
normal. Do this so the trailer will not strike soft
shoulders, curbs, road signs, trees, or other objects.
Avoid jerky or sudden maneuvers. Signal well in
advance.

Turn Signals When Towing a Trailer

When towing a trailer, the vehicle may need a different
turn signal flasher and/or extra wiring. Check with
your dealer. The arrows on the instrument panel will
flash whenever signaling a turn or lane change. Properly
hooked up, the trailer lamps will also flash, telling
other drivers the vehicle and trailer are about to turn,
change lanes, or stop.

When towing a trailer, the arrows on the instrument
panel will flash for turns even if the bulbs on the trailer
are burned out. You may think drivers behind you
are seeing the turn signal when they are not. It is
important to check occasionally to be sure the trailer
bulbs are still working.

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.

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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 transaxle overheating.

If the vehicle has overdrive, it may be driven in
THIRD (3) instead of AUTOMATIC OVERDRIVE (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.

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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. See Scheduled Maintenance on page 6-4
for more information. Things that are especially
important in trailer operation are automatic transaxle
fluid, which should not be overfilled, engine oil,
drive belts, cooling, and brake systems. Each of these
is covered in this instruction, 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. See Engine Overheating
on page 5-27.

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Pontiac Grand Prix (2005 year). Instruction - part 18