weight BUICK LACROSSE 2007 User Guide

Item Description Total
AMaximum Vehicle
Capacity Weight for
Example 3=1,000 lbs (453 kg)
BSubtract Occupant
Weight 200 lbs
(91 kg)×5=1,000 lbs (453 kg)
CAvailable Cargo
Weight=0 lbs (0 kg)
Refer to your vehicle’s Tire and Loading Information
label for specic 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.
Certication Label
A vehicle specic Certication label is found on
the rear edge of the driver’s door.
Example 3
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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. See “Steps for Determining Correct
Load Limit” earlier in this section.
{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.
Notice:Overloading your vehicle may cause
damage. Repairs would not be covered by your
warranty. Do not overload your vehicle.
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.
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{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. SeeRoadside Assistance Program on
page 484.
If you want to tow your vehicle behind another
vehicle for recreational purposes (such as behind
a motorhome), see “Recreational Vehicle
Towing” following.
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Dolly Towing
Your vehicle can be towed using a dolly. To tow
your vehicle using a dolly, follow these steps:
1. Put the front wheels on a dolly.
2. Put the gear shift lever in PARK (P).
3. Set the parking brake and then remove the
ignition 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.
Your vehicle can tow a trailer if it is equipped with
the proper trailer towing equipment. To identify
the trailering capacity of your vehicle, read
the information in “Weight of the Trailer” that
appears later in this section. Trailering is different
than just driving the vehicle by itself.
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Trailering means changes in handling,
acceleration, braking, durability, and fuel
economy. Successful, safe trailering takes
correct equipment, and it has to be used properly.
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 assembly, 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. What is more, the trailer
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 rst
1,000 miles (1 600 km) the vehicle is driven.
The engine, axle or other parts could be
damaged.
Then, during the rst 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.
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There are three important considerations have to
do with weight:
The weight of the trailer
The weight of the trailer tongue
The total weight on the vehicle’s tires
Weight of the Trailer
How heavy can a trailer safely be?
It should never weigh more than 1,000 lbs
(450 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. It can also depend
on any special equipment that is on the vehicle,
and the amount of tongue weight the vehicle can
carry. See “Weight of the Trailer Tongue” later
in this section for more information.Maximum trailer weight is calculated assuming
only the driver is in the tow vehicle and it has all
the required trailering equipment. The weight
of additional optional equipment, passengers and
cargo must be subtracted from the maximum
trailer weight.
Ask your dealer for our trailering information or
advice, or you can write us at:
Buick Customer Assistance Center
P.O. Box 33136
Detroit, MI 48232-5136
In Canada, write to:
General Motors of Canada Limited
Customer Communication Centre, 163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
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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 or 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 you tow a trailer,
you must add the tongue load to the GVW
because the vehicle will be carrying that weight,
too. SeeLoading Your Vehicle on page 319
for more information about the vehicle’s maximum
load capacity.When using a weight-carrying hitch, the trailer
tongue (A) should weigh 10 percent to 15 percent
of the total loaded trailer weight (B).
After the trailer is loaded, weigh the trailer and 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.
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Total Weight on Your Vehicle’s Tires
Be sure the vehicle’s tires are inated to the upper
limit for cold tires. These numbers can be found
on the Tire-Loading Information label. SeeLoading
Your Vehicle on page 319. 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 right 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 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. SeeEngine Exhaust
on page 122. Dirt and water can, too.
Safety Chains
Chains should always be attached 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.
And, never allow safety chains to drag on the
ground.
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Trailer Brakes
Does your trailer have its own brakes? Be sure to
read and follow the instructions for the trailer
brakes so you’ll be able to install, adjust
and maintain them properly.
If your vehicle has anti-lock brakes, do not try
to tap into your vehicle’s brake system. If you
do, both brake systems won’t work well, or
at all.
Even if your vehicle doesn’t have anti-lock
brakes, don’t tap into your vehicle’s brake
system if the trailer’s brake system will
use more than 0.02 cubic inch (0.3 cc) of uid
from your vehicle’s master cylinder. If it
does, both braking systems won’t work well.
You could even lose your brakes.
Will the trailer brake parts take 3,000 psi
(20 650 kPa) of pressure? If not, the
trailer brake system must not be used with
your vehicle.
If everything checks out this far, then make
the brake uid tap at the upper rear master
cylinder port. But don’t use copper tubing
for this. If you do, it will bend and break off.
Use steel brake tubing.
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 all trailer hitch parts 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.
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(C) Aspect Ratio:A two-digit number that
indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is 60,
as shown in item C of the illustration, it would
mean that the tire’s sidewall is 60 percent as high
as it is wide.
(D) Construction Code:A letter code is used to
indicate the type of ply construction in the tire. The
letter R means radial ply construction; the letter D
means diagonal or bias ply construction; and the
letter B means belted-bias ply construction.
(E) Rim Diameter:Diameter of the wheel in
inches.
(F) Service Description:These characters
represent the load range and speed rating of the
tire. The load index represents the load carry
capacity a tire is certied to carry. The load index
can range from 1 to 279. The speed rating is
the maximum speed a tire is certied to carry a
load. Speed ratings range from A to Z.Tire Terminology and Denitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the
tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission/
transaxle, power steering, power brakes, power
windows, power seats, and air conditioning.
Aspect Ratio:The relationship of a tire’s height
to its width.
Belt:A rubber coated layer of cords that is
located between the plies and the tread. Cords
may be made from steel or other reinforcing
materials.
Bead:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.
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