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If you need to replace any of your wheels, wheel
bolts or wheel nuts, replace them only with
new GM original equipment parts. This way, you
will be sure to have the right wheel, wheel
bolts, and wheel nuts for your vehicle.
{CAUTION:
Using the wrong replacement wheels,
wheel bolts, or wheel nuts on your vehicle
can be dangerous. It could affect the
braking and handling of your vehicle,
make your tires lose air and make you
lose control. You could have a collision in
which you or others could be injured.
Always use the correct wheel, wheel bolts,
and wheel nuts for replacement.
Notice:The wrong wheel can also cause
problems with bearing life, brake cooling,
speedometer or odometer calibration,
headlamp aim, bumper height, vehicle ground
clearance, and tire clearance to the body
and chassis.
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after a time. The wheel
could come off and cause a crash. When
you change a wheel, remove any rust or
dirt from places where the wheel attaches
to the vehicle. In an emergency, you can
use a cloth or a paper towel to do this;
but be sure to use a scraper or wire brush
later, if you need to, to get all the rust or
dirt off.
{CAUTION:
Never use oil or grease on studs or the
threads of the wheel nuts. If you do, the
wheel nuts might come loose and the
wheel could fall off, causing a crash.
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Tightening Wheel Lug Nuts
{CAUTION:
Incorrect wheel nuts or improperly
tightened wheel nuts can cause the wheel
to become loose and even come off. This
could lead to a crash. Be sure to use the
correct wheel nuts. If you have to replace
them, be sure to get new GM original
equipment wheel nuts.
Notice:Improperly tightened wheel nuts can
lead to brake pulsation and rotor damage.
To avoid expensive brake repairs, evenly
tighten the wheel nuts in the proper sequence
and to the proper torque speci cation.Tighten the wheel lug
nuts rmly in a
crisscross sequence as
shown.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You cannot know how it has
been used or how far it has been driven. It
could fail suddenly and cause a crash. If
you have to replace a wheel, use a new
GM original equipment wheel.
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Tire Chains
{CAUTION:
Do not use tire chains. There is not
enough clearance. Tire chains used on a
vehicle without the proper amount of
clearance can cause damage to the
brakes, suspension, or other vehicle
parts. The area damaged by the tire
chains could cause you to lose control of
your vehicle and you or others may be
injured in a crash. Use another type of
traction device only if its manufacturer
recommends it for use on your vehicle
and tire size combination and road
conditions. Follow that manufacturer’s
instructions. To help avoid damage to
your vehicle, drive slowly, re-adjust or
remove the device if it is contacting your
vehicle, and do not spin your wheels. If
you do nd traction devices that will t,
install them on the rear tires.
Lifting Your Vehicle
{CAUTION:
Lifting a vehicle can cause an injury. The
vehicle can slip off the jack and roll over
you or other people. You and they could
be badly injured. Find a level place to lift
your vehicle. To help prevent the vehicle
from moving:
1. Set the parking brake rmly.
2. Put an automatic transmission shift
lever in PARK (P).
3. Turn off the engine.
To be even more certain the vehicle won’t
move, you can put blocks in front of and
behind the wheels.
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{CAUTION:
Getting under a vehicle when it is jacked
up is dangerous. If the vehicle slips off
the jack, you could be badly injured or
killed. Never get under a vehicle when it is
supported only by a jack.
{CAUTION:
Raising your vehicle with the jack
improperly positioned can damage the
vehicle and even make the vehicle fall. To
help avoid personal injury and vehicle
damage, be sure to place the jack in the
proper location before raising the vehicle.
If you ever use a jack to lift your vehicle, follow
the instructions that came with the jack, and
be sure to use the correct lifting points to avoid
damaging your vehicle.Notice:Lifting your vehicle improperly can
damage your vehicle and result in costly
repairs not covered by your warranty. To lift
your vehicle properly, follow the advice in
this part.
To help prevent vehicle damage:
Be sure to place a block or pad between
the jack and the vehicle.
Make sure the jack you are using spans at
least two crossmember ribs.
Lift only in the areas shown in the following
pictures.
For additional information, see your GM dealer
and the Cadillac XLR service manual.
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Lifting From the Front
The front lifting points can be accessed from
either side of your vehicle, behind the front tires.1. Locate the front lifting points (A), according to
the illustration shown.
2. Be sure to place a block or pad between the
jack and the vehicle.
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3. Lift the vehicle with the jack, making sure the
jack spans at least two of the crossmember
ribs (B).
Lifting From the Rear
The rear lifting points can be accessed from the
rear of the vehicle, on either the driver’s or
passenger’s side.
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1. Locate the rear lifting points (A), according to
the illustration shown.
2. Be sure to place a block or pad between the
jack and the vehicle.3. Lift the vehicle with the jack, making sure the
jack spans at least two of the crossmember
ribs (B).
For more information, seeDoing Your Own
Service Work on page 364.
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If a Tire Goes Flat
It is unusual for a tire to “blow out” while you are
driving, especially if you maintain your tires
properly. If air goes out of a tire, it is much more
likely to leak out slowly. SeeTires on page 413for
additional information.
Your vehicle, when new, had run- at tires. This
type of tire can operate effectively with no air
pressure, so you will not need to stop on the side
of the road to change a at tire. You can just
keep on driving. The shorter the distance you drive
and the slower the speed, the greater the
chance that the run- at tire will not have to be
replaced. Run- at tires perform so well without any
air that a Tire Pressure Monitor (TPM) is used
to alert you if a tire has lost pressure. SeeRun-Flat
Tires on page 420andTire Pressure Monitor
System on page 423.{CAUTION:
When the TIRE FLAT MAX SPD 55,
REDUCED HNDLG message is displayed
on the Driver Information Center, your
vehicle’s handling capabilities will be
reduced during severe maneuvers. If you
drive too fast, you could lose control of
your vehicle. You or others could be
injured. Don’t drive over 55 mph (90 km/h)
when the TIRE FLAT MAX SPD 55,
REDUCED HNDLG message is displayed.
Drive cautiously and check your tire
pressures as soon as you can.
If the TPM system detects a tire pressure below
5 psi (34 kPa), the TIRE FLAT MAX SPD 55,
REDUCED HNDLG warning message is displayed
on the Driver Information Center (DIC). See
DIC Controls and Displays on page 204andDIC
Warnings and Messages on page 206for
information and details about the DIC operation
and displays.
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