wheel PONTIAC TORRENT 2007 Workshop Manual

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 your
parking brake, and then shift to PARK (P).
5. Release the regular brakes.
When You Are Ready to Leave After
Parking on a Hill
1. Apply your regular brakes and hold the pedal
down while you do the following:
Start your 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
Your vehicle will need service more often when
you are pulling a trailer. See the Maintenance
Schedule for more on this. Things that are
especially important in trailer operation are
automatic transaxle uid, engine oil, belts, cooling
system and brake system. Each of these is
covered in this manual, and the Index will help
you nd them quickly. If you are trailering, it is a
good idea to review these sections before you
start your trip.
Check periodically to see that all hitch nuts and
bolts are tight.
335

Service........................................................ 339
Accessories and Modications................... 339
California Proposition 65 Warning.............. 340
Doing Your Own Service Work.................. 340
Adding Equipment to the Outside of Your
Vehicle................................................... 341
Fuel............................................................. 341
Gasoline Octane........................................ 341
Gasoline Specications.............................. 341
California Fuel........................................... 342
Additives................................................... 342
Fuels in Foreign Countries........................ 343
Filling the Tank......................................... 343
Filling a Portable Fuel Container............... 345
Checking Things Under the Hood.............. 346
Hood Release........................................... 347
Engine Compartment Overview.................. 348
Engine Oil................................................. 349
Engine Oil Life System.............................. 352
Engine Air Cleaner/Filter............................ 354
Automatic Transaxle Fluid......................... 357
Engine Coolant.......................................... 357
Engine Overheating................................... 360Overheated Engine Protection
Operating Mode..................................... 362
Cooling System......................................... 362
Windshield Washer Fluid........................... 368
Brakes...................................................... 369
Battery...................................................... 372
Jump Starting............................................ 373
All-Wheel Drive........................................... 378
Bulb Replacement....................................... 380
Halogen Bulbs........................................... 380
Headlamps, Front Turn Signal,
Sidemarker, and Parking Lamps............. 381
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps...................................... 382
License Plate Lamp................................... 383
Replacement Bulbs................................... 384
Windshield Wiper Blade Replacement....... 384
Tires............................................................ 386
Tire Sidewall Labeling............................... 387
Tire Terminology and Denitions............... 390
Ination - Tire Pressure............................. 393
Tire Pressure Monitor System................... 395
Tire Inspection and Rotation...................... 399
Section 5 Service and Appearance Care
337

When It Is Time for New Tires.................. 401
Buying New Tires...................................... 401
Different Size Tires and Wheels................ 403
Uniform Tire Quality Grading..................... 403
Wheel Alignment and Tire Balance............ 405
Wheel Replacement.................................. 405
Tire Chains............................................... 406
If a Tire Goes Flat.................................... 407
Changing a Flat Tire................................. 408
Removing the Spare Tire and Tools.......... 409
Removing the Flat Tire and Installing the
Spare Tire............................................. 411
Storing a Flat or Spare Tire and Tools...... 418
Compact Spare Tire.................................. 420
Appearance Care........................................ 420
Cleaning the Inside of Your Vehicle.......... 420
Fabric/Carpet............................................. 422
Leather...................................................... 423
Instrument Panel, Vinyl, and Other Plastic
Surfaces................................................ 424
Care of Safety Belts.................................. 424
Weatherstrips............................................ 425Washing Your Vehicle............................... 425
Cleaning Exterior Lamps/Lenses................ 425
Finish Care............................................... 425
Windshield and Wiper Blades.................... 426
Aluminum or Chrome-Plated Wheels......... 426
Tires......................................................... 427
Sheet Metal Damage................................. 427
Finish Damage.......................................... 428
Underbody Maintenance............................ 428
Chemical Paint Spotting............................ 428
Vehicle Care/Appearance Materials............ 429
Vehicle Identication.................................. 430
Vehicle Identication Number (VIN)........... 430
Service Parts Identication Label............... 430
Electrical System........................................ 431
Add-On Electrical Equipment..................... 431
Windshield Wiper Fuses............................ 431
Fuses and Circuit Breakers....................... 431
Instrument Panel Fuse Block..................... 432
Engine Compartment Fuse Block............... 434
Capacities and Specications.................... 436
Section 5 Service and Appearance Care
338

What to Add
When you do need brake uid, use only DOT-3
brake uid. Use new brake uid from a sealed
container only. SeeRecommended Fluids
and Lubricants on page 449.
Always clean the brake uid reservoir cap and the
area around the cap before removing it. This
will help keep dirt from entering the reservoir.
{CAUTION:
With the wrong kind of uid in the brake
system, the brakes may not work well, or
they may not even work at all. This could
cause a crash. Always use the proper
brake uid.Notice:
Using the wrong uid can badly damage
brake system parts. For example, just a
few drops of mineral-based oil, such
as engine oil, in the brake system can
damage brake system parts so badly that
they will have to be replaced. Do not
let someone put in the wrong kind of uid.
If you spill brake uid on your vehicle’s
painted surfaces, the paint nish can
be damaged. Be careful not to spill brake
uid on your vehicle. If you do, wash it
off immediately. SeeWashing Your Vehicle
on page 425.
Brake Wear
Your vehicle has four-wheel disc brakes.
Disc brake pads have built-in wear indicators that
make a high-pitched warning sound when the
brake pads are worn and new pads are needed.
The sound may come and go or be heard all
the time your vehicle is moving, except when you
are pushing on the brake pedal rmly.
370

{CAUTION:
The brake wear warning sound means that
soon the brakes will not work well. That
could lead to an accident. When you hear
the brake wear warning sound, have your
vehicle serviced.
Notice:Continuing to drive with worn-out
brake pads could result in costly brake repair.
Some driving conditions or climates may cause
a brake squeal when the brakes are rst applied or
lightly applied. This does not mean something is
wrong with your brakes.
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
specications.
Brake linings should always be replaced as
complete axle sets.
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 do not, 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 have come to expect can change in many other
ways if someone puts in the wrong replacement
brake parts.
371

To disconnect the jumper cables from both
vehicles, do the following:
1. Disconnect the black negative (−) cable from
the vehicle that had the dead battery.
2. Disconnect the black negative (−) cable from
the vehicle with the good battery.
3. Disconnect the red positive (+) cable from the
vehicle with the good battery.
4. Disconnect the red positive (+) cable from the
other vehicle.
5. Return the fuse block cover to its original
position.All-Wheel Drive
If you have an all-wheel-drive vehicle, be sure to
perform the lubricant checks described in this
section. However, there are two additional systems
that need lubrication.
Transfer Case (Power Transfer Unit)
When to Check Lubricant
Refer to the Maintenance Schedule to determine
how often to check the lubricant. SeeScheduled
Maintenance on page 440.
378

(B) Tire Width:The three-digit number indicates
the tire section width in millimeters from sidewall
to sidewall.
(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.
390

Tire Pressure Monitor System
Your vehicle has a Tire Pressure Monitor System
(TPMS). This system uses radio and sensor
technology to check tire pressure levels. TPMS
sensors are mounted onto each tire and wheel
assembly, except for the spare tire. The TPMS
sensors monitor the air pressure in your vehicle’s
tires and transmit tire pressure readings to a
receiver located in the vehicle.
Each tire, including the spare (if provided), should
be checked monthly when cold and inated to
the ination pressure recommended by the vehicle
manufacturer on the vehicle placard or tire
ination pressure label. (If your vehicle has tires of
a different size than the size indicated on the
vehicle placard or tire ination pressure label, you
should determine the proper tire ination
pressure for those tires.)As an added safety
feature, your vehicle
has been equipped with
a tire pressure
monitoring system
(TPMS) that illuminates
a low tire pressure
telltale when one
or more of your tires is
signicantly
under-inated.
Accordingly, when the low tire pressure telltale
illuminates, you should stop and check your tires
as soon as possible, and inate them to the
proper pressure. Driving on a signicantly
under-inated tire causes the tire to overheat and
can lead to tire failure. Under-ination also
reduces fuel efficiency and tire tread life, and may
affect the vehicle’s handling and stopping ability.
395

Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver’s
responsibility to maintain correct tire pressure, even
if under-ination has not reached the level to trigger
illumination of the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the
system is not operating properly. The TPMS
malfunction indicator is combined with the low tire
pressure telltale. When the system detects a
malfunction, the telltale will ash for approximately
one minute and then remain continuously
illuminated. This sequence will continue upon
subsequent vehicle start-ups as long as the
malfunction exists.
When the malfunction indicator is illuminated, the
system may not be able to detect or signal low
tire pressure as intended. TPMS malfunctions may
occur for a variety of reasons, including the
installation of replacement or alternate tires or
wheels on the vehicle that prevent the TPMS from
functioning properly. Always check the TPMS
malfunction telltale after replacing one or more
tires or wheels on your vehicle to ensure that the
replacement or alternate tires and wheels allow
the TPMS to continue to function properly.When a low tire pressure condition is detected,
the TPMS will illuminate the low tire pressure
warning symbol on the instrument panel cluster,
and at the same time a message to check
the pressure in a specic tire will appear on the
Driver Information Center (DIC) display. The
low tire pressure warning symbol on the instrument
panel cluster and the check tire pressure
message will appear at each ignition cycle until
the tires are inated to the correct ination
pressure. Using the DIC, tire pressure levels can
be viewed by the driver. For additional information
and details about the DIC operation and displays
seeDIC Operation and Displays on page 195
andDIC Warnings and Messages on page 200.
The low tire pressure warning light may come on in
cool weather when the vehicle is rst started,
and then turn off as you start to drive. This may
be an early indicator that the air pressure in
the tire(s) are getting low and need to be inated
to the proper pressure.
A Tire and Loading Information Label, attached to
your vehicle, shows the size of your vehicle’s
original equipment tires and the correct ination
pressure for your vehicle’s tires when they are cold.
396

SeeLoading Your Vehicle on page 321, for an
example of the Tire and Loading Information
Label and its location on your vehicle. Also see
Ination - Tire Pressure on page 393.
Your vehicle’s TPMS system can warn you about a
low tire pressure condition but it does not replace
normal tire maintenance. SeeTire Inspection and
Rotation on page 399andTires on page 386.
Notice:Do not use a tire sealant if your vehicle
has Tire Pressure Monitors. The liquid sealant
can damage the tire pressure monitor sensors.
The TPMS will not function properly if one or more
of the TPMS sensors are missing or inoperable. If
the system detects a missing or inoperable sensor,
an error message SERVICE TIRE MONITOR
SYSTEM will be shown on the DIC display. If you
have replaced a tire/wheel assembly without
transferring the TPMS sensors, the error message
will be displayed. Once you re-install the TPMS
sensors, the error message should go off. See your
dealer for service if all TPMS sensors are installed
and the error message comes on and stays on.TPMS Sensor Matching Process
Each TPMS sensor has a unique identication
code. Any time you replace one or more of
the TPMS sensors or rotate the vehicle’s tires, the
identication codes will need to be matched to
the new tire/wheel position. The sensors are
matched, to the tire/wheel positions, in the
following order: driver side front tire, passenger
side front tire, passenger side rear tire, and driver
side rear tire using a TPMS diagnostic tool.
See your dealer for service.
The TPMS sensors may also be matched to each
tire/wheel position by increasing or decreasing
the tire’s air pressure. When increasing the tire’s
pressure, do not exceed the maximum ination
pressure indicated on the tire’s sidewall.
You will have two minutes to match each tire and
wheel position. If it takes longer than two
minutes to match any tire and wheel position, the
matching process stops and you will need to
start over.
397