2007 GMC ENVOY wheel size

Windshield Wiper Blade Replacement....... 436
Tires............................................................ 439
Tire Sidewall Labeling............................... 440
Tire Terminology and Denitions............... 444
Ination - Tire Pressure............................. 447
Tire Pressure Monitor System................... 448
Tire Inspection and Rotation...................... 453
When It Is Time for New Tires.................. 455
Buying New Tires...................................... 455
Different Size Tires and Wheels................ 457
Uniform Tire Quality Grading..................... 458
Wheel Alignment and Tire Balance............ 459
Wheel Replacement.................................. 460
Tire Chains............................................... 461
Accessory Inator...................................... 462
If a Tire Goes Flat.................................... 464
Changing a Flat Tire................................. 465
Removing the Spare Tire and Tools.......... 466
Removing the Flat Tire and Installing
the Spare Tire....................................... 469
Secondary Latch System........................... 475
Storing a Flat or Spare Tire and Tools...... 478
Spare Tire................................................. 481Appearance Care........................................ 482
Cleaning the Inside of Your Vehicle.......... 482
Fabric/Carpet............................................. 483
Leather...................................................... 484
Instrument Panel, Vinyl, and Other
Plastic Surfaces..................................... 485
Care of Safety Belts.................................. 485
Weatherstrips............................................ 485
Washing Your Vehicle............................... 486
Cleaning Exterior Lamps/Lenses................ 486
Finish Care............................................... 486
Windshield, Backglass, and
Wiper Blades......................................... 487
Aluminum Wheels...................................... 488
Tires......................................................... 488
Sheet Metal Damage................................. 489
Finish Damage.......................................... 489
Underbody Maintenance............................ 489
Chemical Paint Spotting............................ 489
Vehicle Care/Appearance Materials............ 490
Section 5 Service and Appearance Care
378

Tire Size
The following examples show the different parts of
a tire size.
(A) Passenger (P-Metric) Tire:The United
States version of a metric tire sizing system.
The letter P as the rst character in the tire size
means a passenger vehicle tire engineered
to standards set by the U.S. Tire and Rim
Association.(A) Light Truck (LT-Metric) Tire:The United
States version of a metric tire sizing system. The
letters LT as the rst two characters in the tire size
means a light truck tire engineered to standards set
by the U.S. Tire and Rim Association.
(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 75, as
shown in item C of the light truck (LT-Metric) tire
illustration, it would mean that the tire’s sidewall is
75 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:The service description
indicates the load range and speed rating of a
tire. The load index can range from 1 to 279.
Speed ratings range from A to Z.
Passenger (P-Metric) Tire
Light Truck (LT-Metric) Tire
443

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.The Tire and Loading Information label (tire
information placard) shows the size of your
vehicle’s original tires and the correct ination
pressure for your vehicle’s tires when they
are cold. SeeInation - Tire Pressure on
page 447. For the location of the tire and loading
information label, seeLoading Your Vehicle
on page 349.
Your vehicle’s TPMS can alert you about a low
tire pressure condition but it does not replace
normal tire maintenance. SeeTire Inspection and
Rotation on page 453andTires on page 439.
Notice:Do not use a tire sealant if your
vehicle has Tire Pressure Monitors. The liquid
sealant can damage the tire pressure monitor
sensors.
450

If the tires have an all-season tread design, the
TPC spec number will be followed by a MS,
for mud and snow. SeeTire Sidewall Labeling
on page 440for additional information.
{CAUTION:
Mixing tires could cause you to lose
control while driving. If you mix tires of
different sizes, brands, or types (radial
and bias-belted tires) the vehicle may not
handle properly, and you could have a
crash. Using tires of different sizes,
brands, or types may also cause damage
to your vehicle. Be sure to use the correct
size, brand, and type of tires on your
vehicle’s wheels.
{CAUTION:
If you use bias-ply tires on your vehicle,
the wheel rim anges could develop
cracks after many miles of driving. A tire
and/or wheel could fail suddenly, causing
a crash. Use only radial-ply tires with the
wheels on your vehicle.
If you must replace your vehicle’s tires with those
that do not have a TPC Spec number, make
sure they are the same size, load range, speed
rating, and construction type (radial and
bias-belted tires) as your vehicle’s original tires.
Vehicles equipped with a tire pressure monitoring
system may give an inaccurate low-pressure
warning if non-TPC spec rated tires are installed
on your vehicle. Non-TPC Spec rated tires
may give a low-pressure warning that is higher or
lower than the proper warning level you would
get with TPC Spec rated tires. SeeTire Pressure
Monitor System on page 448.
456

Your vehicle’s original equipment tires are listed
on the Tire and Loading Information Label.
This label is attached to the vehicle’s center pillar
(B-pillar). SeeLoading Your Vehicle on page 349,
for more information about the Tire and Loading
Information Label.
Different Size Tires and Wheels
If you add wheels or tires that are a different
size than your original equipment wheels and
tires, this may affect the way your vehicle
performs, including its braking, ride and handling
characteristics, stability, and resistance to
rollover. Additionally, if your vehicle has electronic
systems such as, anti-lock brakes, traction
control, and electronic stability control, the
performance of these systems can be affected.
{CAUTION:
If you add different sized wheels, your
vehicle may not provide an acceptable
level of performance and safety if tires
not recommended for those wheels are
selected. You may increase the chance
that you will crash and suffer serious
injury. Only use GM specic wheel and
tire systems developed for your vehicle,
and have them properly installed by a
GM certied technician.
SeeBuying New Tires on page 455and
Accessories and Modications on page 380
for additional information.
457

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.
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.
461

A. Handle
B. Wheel Wrench
C. Instruction LabelD. Extension(s)
E. Knob
F. Wheel Blocks and Jack
1. Attach the handle (A), wheel wrench (B),
and extension (D) in the slots provided.
2. Roll up the instruction label (C) and return
to the slot in the tool kit.
3. Assemble the wheel blocks (F) to the jack.
4. Turn the knob (E) on the jack clockwise to
raise the jack head.
5. Return the rear seat to its proper position.
Spare Tire
Your vehicle, when new, had a fully-inated spare
tire. A spare tire may lose air over time, so check its
ination pressure regularly. SeeInation - Tire
Pressure on page 447andLoading Your Vehicle
on page 349for information regarding proper tire
ination and loading your vehicle. For instruction on
how to remove, install or store a spare tire, see
Removing the Flat Tire and Installing the Spare Tire
on page 469andStoring a Flat or Spare Tire and
Tools on page 478.
After installing the spare tire on your vehicle, you
should stop as soon as possible and make
sure the spare is correctly inated. Have the
damaged or at road tire repaired or replaced as
soon as you can and installed back onto your
vehicle. This way, a spare tire will be available
in case you need it again.
Do not mix tires and wheels of different sizes,
because they will not t. Keep your spare tire
and its wheel together.
481

Steering...................................................... 314
Steering Wheel Controls, Audio................... 297
Steering Wheel, Tilt Wheel.......................... 171
Storage Areas
Center Console Storage Area................... 160
Convenience Net..................................... 162
Glove Box................................................ 160
Luggage Carrier....................................... 161
Overhead Console................................... 160
Rear Floor Storage Lid............................ 162
Stuck in Sand, Mud, Ice, or Snow............... 348
Sun Visors.................................................. 109
Sunroof....................................................... 164
Suspension................................................. 360
T
Tachometer................................................. 199
Taillamps
Turn Signal, and Stoplamps..................... 432
Theft-Deterrent, Radio................................. 296
Theft-Deterrent Systems.............................. 110
Content Theft-Deterrent............................ 110
Passlock
®................................................ 111
Throttle, Adjustable...................................... 116
Tilt Wheel.................................................... 171Tire
Pressure Light.......................................... 209
Tires........................................................... 439
Aluminum Wheels, Cleaning..................... 488
Buying New Tires..................................... 455
Chains..................................................... 461
Changing a Flat Tire................................ 465
Cleaning.................................................. 488
Different Size........................................... 457
If a Tire Goes Flat................................... 464
Ination - Tire Pressure............................ 447
Inator, Accessory.................................... 462
Inspection and Rotation............................ 453
Installing the Spare Tire........................... 469
Pressure Monitor System ......................... 448
Removing the Flat Tire............................. 469
Removing the Spare Tire and Tools......... 466
Secondary Latch System ......................... 475
Spare Tire................................................ 481
Storing a Flat or Spare Tire and Tools..... 478
Tire Sidewall Labeling.............................. 440
Tire Terminology and Denitions............... 444
Uniform Tire Quality Grading.................... 458
Wheel Alignment and Tire Balance........... 459
Wheel Replacement................................. 460
When It Is Time for New Tires................. 455
560