2009 SATURN ASTRA wheel bolts

Rear disc brake pads do not have
built-in brake pad wear indicators.
Periodic visual inspection of the rear
brake pads is required to determine
when to replace the pads. Visually
inspect the rear brake pads
whenever the rear wheels are
removed such as during tire rotation.
1. Set the parking brake and make
sure that the brakes have been
given enough time to cool.
2. Remove the rear wheels.
3. Visually inspect the rear brake
inner pads (C) at each rear
wheel through the inspection
window in the brake caliper (A).Brake pads should be replaced
when the inner pad (C) is
worn to 5/64 in (2 mm) of pad
thickness (B). New brake pads,
with no wear, are 25/64 of
an inch (10 mm) thick.
4. After brake pad inspection or
replacement, install the rear
wheels.
Some driving conditions or climates
can cause a brake squeal when
the brakes are rst applied or
lightly applied. This does not mean
something is wrong with the brakes.Properly torqued wheel bolts are
necessary to help prevent brake
pulsation. When tires are rotated,
inspect brake pads for wear
and evenly tighten wheel bolts in
the proper sequence to torque
specications inCapacities
and Specifications on page 10-2.
Brake linings should always
be replaced as complete axle sets.
Brake Pedal Travel
See your dealer/retailer if the brake
pedal does not return to normal
height, or if there is a rapid increase
in pedal travel. This could be a
sign that brake service might
be required.
Brake Adjustment
Every brake stop, the disc brakes
adjust for wear.
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Use this pattern when rotating
the vehicle tires. Do not include
the compact spare tire in the
tire rotation.
{CAUTION
Rust or dirt on a wheel, or on
the parts to which it is
fastened, can make wheel
bolts become loose after time.
(Continued)
CAUTION (Continued)
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 using a scraper or
wire brush.
Installing wheels with a good
metal-to-metal contact at
the mounting surfaces is
necessary to prevent wheel
bolts from becoming loose.
To prevent corrosion or
rust build-up, lightly coat the
wheel hub center and the
cone-shaped surface of each
wheel bolt with wheel bearing
grease, after a wheel change.SeeChanging a Flat Tire on
page 9-61for information
on installing the tire and wheel
assembly. Also see “Wheel
Bolt Torque” underCapacities
and Specifications on page 10-2.
Adjust the front and rear
tires to the recommended
cold tire ination pressure
shown on the Tire and
Loading Information label.
SeeInflation - Tire Pressure
on page 9-47andLoading the
Vehicle on page 8-30.
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Wheel Replacement
Replace any wheel that is bent,
cracked or badly rusted or corroded.
If the wheel bolts keep coming
loose, the wheel and wheel bolts
should be replaced. If the wheel
leaks air, replace it (except some
aluminum wheels, which can
sometimes be repaired). See your
dealer/retailer if any of these
conditions exist.
Your dealer/retailer will know the
kind of wheel you need.
Each new wheel should have the
same load-carrying capacity,
diameter, width, offset and be
mounted the same way as the
one it replaces.
If you need to replace any of the
wheels or wheel bolts, replace them
only with new GM original equipment
parts. This way, you will be sure to
have the right wheel and wheel bolts
for the vehicle.{CAUTION
Using the wrong replacement
wheels or wheel bolts on your
vehicle can be dangerous. It could
affect the braking and handling of
the vehicle, make the tires lose air
and make you lose control of
the vehicle. You could have a
collision in which you or others
could be injured. Always use the
correct wheel and wheel bolts 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
or tire chain clearance to the
body and chassis.
SeeChanging a Flat Tire on
page 9-61for more information.
Used Replacement Wheels
{CAUTION
Putting a used wheel on the
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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Removing the Flat Tire
and Installing the
Spare Tire
1. If your vehicle has wheel covers,
remove the cover.
Do not try to put a wheel cover
on your compact spare tire.
It will not t. Store the wheel
cover in the trunk until you have
the at tire repaired or replaced.
Notice:Wheel covers will not t
on your vehicle’s compact spare.
If you try to put a wheel cover on
the compact spare, the cover or
the spare could be damaged.
2. If your vehicle has wheel bolt
caps, remove the caps. Store
the caps with the wheel cover.3. Use the wheel wrench to loosen
all the wheel bolts. Do not
remove them yet.Notice:Make sure that the
jack lift head is in the correct
position or you may damage your
vehicle. The repairs would not
be covered by your warranty.
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4. Position the jack lift head at the
jack location nearest the at
tire. The location is indicated by
a mark on the bottom edge
of the vehicle.
5. Put the compact spare tire
near you.
{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 t the jack lift
head into the proper location
before raising the vehicle.6. Raise the vehicle by turning the
jack handle clockwise. Raise the
vehicle far enough off the
ground so there is enough room
for the compact spare tire to
t under the vehicle.
7. Remove all of the wheel bolts.
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{CAUTION
Rust or dirt on a wheel, or on
the parts to which it is fastened,
can make wheel bolts become
loose after time. The wheel could
come off and cause an accident.
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 needed, to get all the rust or
dirt off. SeeChanging a Flat Tire
on page 9-61.8. Remove any rust or dirt from the
wheel bolts, mounting surfaces
and spare wheel.
Installing wheels with a good
metal-to-metal contact at
the mounting surface is
necessary to prevent the wheel
bolts from becoming loose.
To prevent corrosion or rust
build-up, apply a light coat of
wheel bearing grease to the
wheel hub center and to the
cone-shaped surface of each
wheel bolt at every wheel change.9. Place the compact spare tire on
the wheel-mounting surface.
10. Reinstall the wheel bolts with
the rounded end of the bolts
toward the wheel. Tighten each
bolt by hand until the wheel
is held against the hub.
11. Lower the vehicle by turning the
jack handle counterclockwise.
Lower the jack completely.
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12. Tighten the wheel bolts rmly
in a crisscross sequence,
as shown.
{CAUTION
Wheel nuts that are improperly or
incorrectly tightened can cause
the wheels to become loose or
come off. The wheel nuts should
be tightened with a torque wrench
(Continued)
CAUTION (Continued)
to the proper torque specication
after replacing. Follow the torque
specication supplied by the
aftermarket manufacturer when
using accessory locking wheel
nuts. SeeCapacities and
Specifications on page 10-2for
original equipment wheel nut
torque specications.
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 specication.
SeeCapacities and Specifications
on page 10-2for the wheel nut
torque specication.
Storing a Flat or Spare
Tire and Tools
{CAUTION
Storing a jack, a tire, or other
equipment in the passenger
compartment of the vehicle could
cause injury. In a sudden stop or
collision, loose equipment could
strike someone. Store all these in
the proper place.
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