wheel torque OLDSMOBILE SILHOUETTE 2003 Owners Manual

To turn the system off,
press the TCS button
located on the instrument
panel switchbank.
All-Wheel Drive (AWD) System
If your vehicle has all-wheel drive (AWD), the AWD
system operates automatically without any action
required by the driver.
If the front drive wheels begin
to slip, the rear wheels will automatically begin to
drive the vehicle as required. There may be a slight
engagement noise during hard use but this is normal.
During heavy
AWD applications, the engine torque
may be reduced to protect AWD system components.
If the vehicle is exposed to extended heavy AWD usage,
the AWD system will shut itself
off to protect the system
from overheatinq. When the system
cools down, the
AWD system will activate itself again automatically; this
If the System is hliting wheel Spin when
YOU press the cool-down can take up to 20 minutes depending on
button, the traction active message will go
off, but outside temperature and vehicle use. See All-Wheel
the system will not turn off until there is no longer a Drive Disable Warning Message on page 3-59.
current need to limit wheel spin. The TRAC OFF light will
come on to remind you the system is
off. You can
turn the system back
on at any time by pressing the
button again.
The traction control system warning
4-1 1

Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake pads for wear and evenly tighten wheel nuts
in
the proper sequence to GM torque specifications.
Your rear drum brakes don’t have wear indicators, but
if
you ever hear a rear brake rubbing noise, have the
rear brake linings inspected immediately.
Also, the rear
brake drums should be removed and inspected each
time the tires are removed for rotation or changing.
When you have the front brake pads replaced, have the
rear brakes inspected, too.
Brake linings should always be replaced as complete
axle sets.
See
Brake System Inspection on page 6-15.
Brake Pedal Travel
See your dealer 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 of brake trouble.
Brake Adjustment
Every time you apply the brakes, with or without the
vehicle moving, your brakes adjust for wear.
Replacing Brake System Parts
The braking system on a vehicle is complex. Its many
parts have to be of top quality and work well together
if
the vehicle is to have really good braking. Your vehicle
was designed and tested with top-quality
GM brake parts.
When you replace parts of your braking system -for
example, when your brake linings wear down and you
need new ones put in
- be sure you get new approved
GM replacement parts. If you don’t, your brakes may no
longer work properly. For example,
if someone puts in
brake linings that are wrong for your vehicle, the balance
between your front and rear brakes can change -for the
worse. The braking performance you’ve come to expect
can change in many other ways
if someone puts in the
wrong replacement brake parts.
5-42

After the tires have been rotated, adjust the front and rear
inflation pressures as shown on the Certification/Tire
label. Make certain that all wheel nuts are properly
tightened. See “Wheel Nut Torque” under
Capacities and
Specifications on page 5-
103.
-3ust 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 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 you need to, to
get all the rust or dirt
off. See “Changing a Flat
Tire”
in the Index.
When It Is Time for New Tires
One way to tell when it’s
time for new tires is to
check the treadwear
indicators, which will
appear when your tires
have only
1/16 inch
(1.6 mm) or less of tread
remaining.
You need a new tire
if any of the following statements
are true:
You can see the indicators at three or more places
You can see cord or fabric showing through the
The tread or sidewall is cracked, cut or snagged
The tire has a bump, bulge or split.
The tire has a puncture, cut or other damage that
around the tire.
tire’s rubber. deep enough to show cord or fabric.
__ can’t be repaired well because of the size or
location
of the damage.
5-63

9. Tighten the wheel nuts
firmly in a crisscross
sequence, as shown.
Incorrect wheel nuts or improperly tightened
wheel nuts can cause the wheel
to come loose
and even come
off. This could lead to an
accident. Be sure to use the correct wheel
nuts. If you have to replace them, be sure to
get new
GM original equipment wheel nuts.
Stop somewhere as soon as you can and have
the nuts tightened with a torque wrench to the
proper torque specification. See ”Capacities
and Specifications”
in the Index for wheel nut
torque specification.
Nofice: 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
specification. See “Capacities and Specifications”
in the index for the wheel nut torque specification.
10. Don’t try to put a wheel cover on the compact spare
tire. It won’t fit. Store the wheel cover securely in
the rear of the vehicle until you have the flat tire
repaired or replaced.
Notice: Wheel covers won’t fit on your compact
spare.
If you try to put a wheel cover on your
compact spare, you could damage the cover or
the spare.
5-80

Throttle System Inspection ..... ................ 6-15
Tilt Wheel
................................ ................. 3-7
Tire Inflation Check
...................................... 6-10
Tires
..................................................... 5-60, 5-92
Buying New Tires
........................................ 5-64
Chains
....................................................... 5-67
Changing a Flat Tire
.................................... 5-70
If a Tire Goes Flat ....................................... 5-69
Inflation
- Tire Pressure ............................... 5-61
Inspection and Rotation
................................ 5-62
Wheel Alignment and Tire Balance
................. 5-66
When It
Is Time for New Tires ...................... 5-63
To Use the Engine Coolant Heater
.................... 2-35
Top of the Instrument Panel
............................. 5-89
Top Strap Anchor Location
............................... 1-56
Total Weight on Your Vehicle’s Tires .................. 4-39
Towing
Recreational Vehicle
..................................... 4-32
Towing a Trailer
.......................................... 4-36
Your Vehicle
............................................... 4-32
Active Message
........................................... 3-53
Compact
Spare Tire
..................................... 5-86
Uniform Tire Quality Grading
......................... 5-65
Wheel Replacement
..................................... 5-66
Top Strap
...................................................... 1-55
Torque Lock
................................................... 2-42
Traction Control System (TCS)
.................................. 4-10 Traction
(cont.)
Control System Warning Light
....................... 3-46
Service Traction System Warning Message
..... 3-52
Trailer Brakes
................................................. 4-40
Trailer Wiring Harness
..................................... 4-43
Transaxle
Transaxle Operation, Automatic
......................... 2-36
Transfer Case (Power Transfer Unit)
.................. 5-50
Transmission, Transaxle, Transfer Case Unit Repair Manual
...................................... 7-10
Fluid, Automatic
........................................... 5-20
Transportation Options
...................................... 7-7
Trip Computer
................................................ 3-62
Turn and Lane-Change Signals
.......................... 3-8
Turn SignaVMultifunction Lever
........................... 3-7
Turn Signals When Towing a Trailer
.................. 4-42
Underbody Flushing Service
............................. 6-13
Underhood Fuse Block
................................... 5-100
Understanding Radio Reception
....................... 3-1 03
Uniform Tire Quality Grading ............................ 5-65
United States
................................................... 7-4
Used Replacement Wheels
.............................. 5-67
Using Cleaner on Fabric
.................................. 5-88
Using HomeLink@
........................................... 2-52
16