wheel alignment GMC ENVOY 2003 Owner's Manual

Service............................................................5-3
Doing Your Own Service Work.........................5-3
Adding Equipment to the Outside of Your
Vehicle......................................................5-4
Fuel................................................................5-4
Gasoline Octane............................................5-4
Gasoline Speci®cations....................................5-5
California Fuel...............................................5-5
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-7
Filling Your Tank............................................5-7
Filling a Portable Fuel Container.......................5-9
Checking Things Under the Hood....................5-10
Hood Release..............................................5-10
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-15
Engine Air Cleaner/Filter................................5-20
Automatic Transmission Fluid.........................5-21
Engine Coolant.............................................5-24
Radiator Pressure Cap..................................5-26
Engine Overheating.......................................5-27
Cooling System............................................5-29
Engine Fan Noise.........................................5-35
Power Steering Fluid.....................................5-36
Windshield Washer Fluid................................5-37Brakes........................................................5-38
Battery........................................................5-41
Jump Starting...............................................5-42
Rear Axle.......................................................5-48
Four-Wheel Drive............................................5-48
Bulb Replacement..........................................5-50
Halogen Bulbs..............................................5-50
Headlamps..................................................5-50
Front Turn Signal and Sidemarker Lamps........5-51
Taillamps and Turn Signal Lamps...................5-51
Replacement Bulbs.......................................5-52
Windshield Wiper Blade Replacement..............5-52
Tires..............................................................5-54
In¯ation -- Tire Pressure................................5-55
Tire Inspection and Rotation...........................5-55
When It Is Time for New Tires.......................5-57
Buying New Tires.........................................5-58
Uniform Tire Quality Grading..........................5-59
Wheel Alignment and Tire Balance..................5-60
Wheel Replacement......................................5-60
Tire Chains..................................................5-62
Accessory In¯ator.........................................5-62
If a Tire Goes Flat........................................5-64
Changing a Flat Tire.....................................5-64
Section 5 Service and Appearance Care
5-1

In¯ation -- Tire Pressure
The Certi®cation/Tire label, which is on the driver's door
edge, above the door latch, shows the correct in¯ation
pressures for your tires when they're cold. ªColdº means
your vehicle has been sitting for at least three hours
or driven no more than 1 mile (1.6 km).
Notice:Don't let anyone tell you that underin¯ation
or overin¯ation is all right. It's not. If your tires
don't have enough air (underin¯ation), you can get
the following:
·Too much ¯exing
·Too much heat
·Tire overloading
·Bad wear
·Bad handling
·Bad fuel economy
If your tires have too much air (overin¯ation), you
can get the following:
·Unusual wear
·Bad handling
·Rough ride
·Needless damage from road hazards
When to Check
Check your tires once a month or more.
Also, check the tire pressure of the spare tire.
How to Check
Use a good quality pocket-type gage to check tire
pressure. You can't tell if your tires are properly in¯ated
simply by looking at them. Radial tires may look
properly in¯ated even when they're underin¯ated.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and
moisture.
Tire Inspection and Rotation
Tires should be rotated every 7,500 miles (12 500 km).
Any time you notice unusual wear, rotate your tires
as soon as possible and check wheel alignment. Also
check for damaged tires or wheels. See
When It Is Time
for New Tires on page 5-57andWheel Replacement
on page 5-60for more information.
Make sure the spare tire is stored securely. Push, pull,
and then try to rotate or turn the tire. If it moves,
use the wheel wrench to tighten the cable. See
Changing a Flat Tire on page 5-64.
5-55

Temperature ± A, B, C
The temperature grades are A (the highest), B, and C,
representing the tire's resistance to the generation
of heat and its ability to dissipate heat when tested
under controlled conditions on a speci®ed indoor
laboratory test wheel. Sustained high temperature can
cause the material of the tire to degenerate and
reduce tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds to a
level of performance which all passenger car tires must
meet under the Federal Motor Vehicle Safety Standard
No. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the
minimum required by law.
Warning: The temperature grade for this tire is
established for a tire that is properly in¯ated and not
overloaded. Excessive speed, underin¯ation, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.
Wheel Alignment and Tire Balance
The wheels on your vehicle were aligned and balanced
carefully at the factory to give you the longest tire life
and best overall performance.
Scheduled wheel alignment and wheel balancing are
not needed. However, if you notice unusual tire wear or
your vehicle pulling one way or the other, the alignment
may need to be reset. If you notice your vehicle
vibrating when driving on a smooth road, your wheels
may need to be rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked or badly rusted
or corroded. If wheel nuts keep coming loose, the
wheel, wheel bolts and wheel nuts should be replaced.
If the wheel leaks air, replace it (except some
aluminum wheels, which can sometimes be repaired).
See your dealer if any of these conditions exist.
Your dealer 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.
5-60

Shifting Out of Park (P)...................................2-31
Skidding........................................................4-14
Snow Plow....................................................4-50
Some Other Rainy Weather Tips.......................4-32
Spare Tire Check............................................6-12
Special Fabric Cleaning Problems.....................5-81
Speci®cations, Capacities...............................5-102
Speedometer..................................................3-36
Stalling on an Incline.......................................4-26
Starter Switch Check.......................................6-13
Starting Your Engine.......................................2-21
Steering in Emergencies..................................4-11
Steering, Suspension and Front Drive Axle Boot
and Seal Inspection.....................................6-16
Steering Tips..................................................4-10
Steering Wheel Climate Controls.......................3-33
Steering Wheel Controls, Audio.......................3-105
Steering........................................................4-10
Stereo RCA Jacks..........................................3-93
Storage Areas................................................2-49
Convenience Net.........................................2-49
Front Storage Area......................................2-45
Glove Box..................................................2-44
Luggage Carrier..........................................2-48
Overhead Console.......................................2-44
Rear Floor Storage Lid.................................2-49
Storing a Flat or Spare Tire and Tools...............5-77
Stuck in Sand, Mud, Ice or Snow......................4-44Sun Visors.....................................................2-16
Sunglasses Storage Compartment.....................2-44
Sunroof.........................................................2-51
T
Tachometer....................................................3-36
Taillamps.......................................................5-51
Turn Signal Lamps......................................5-51
Testing the Alarm............................................2-18
Theft-Deterrent, Radio....................................3-104
Theft-Deterrent Systems...................................2-17
Content Theft-Deterrent................................2-17
Passlock
ž...................................................2-18
Tilt Wheel........................................................ 3-7
Tire In¯ation Check.........................................6-11
Tires.............................................................5-54
Buying New Tires........................................5-58
Chains.......................................................5-62
Changing a Flat Tire....................................5-64
If a Tire Goes Flat.......................................5-64
In¯ation -- Tire Pressure...............................5-55
Inspection and Rotation................................5-55
Uniform Tire Quality Grading.........................5-59
Wheel Alignment and Tire Balance.................5-60
Wheel Replacement.....................................5-60
When It Is Time for New Tires......................5-57
To Use the Engine Coolant Heater....................2-22
14

Video Screen.................................................3-94
Visor Vanity Mirror..........................................2-16
Visors...........................................................2-16
Voltmeter Gage..............................................3-39
W
Warning Lights, Gages and Indicators................3-34
Warnings.......................................................3-60
DIC Warnings and Messages........................3-60
Hazard Warning Flashers............................... 3-6
Other Warning Devices.................................. 3-6
Safety and Symbols......................................... iii
Vehicle Damage.............................................. iv
Washing Your Vehicle......................................5-83
Weatherstrip Lubrication...................................6-12
Weight of the Trailer Tongue.............................4-54
Weight of the Trailer........................................4-52
What Kind of Engine Oil to Use........................5-17
What to Add..................................................5-39
What to Do with Used Oil................................5-19
What to Use..........................5-24, 5-36, 5-37, 5-48
Wheels..........................................................5-60
Alignment and Tire Balance..........................5-60
Replacement...............................................5-60
When to Add Engine Oil..................................5-16When to Change Engine Oil
(GM Oil Life System)...................................5-18
When to Check and Change............................5-21
When to Check Lubricant.................................5-48
When to Check Power Steering Fluid................5-36
When to Check..............................................5-55
When to Inspect.............................................5-20
When You Are Ready to Leave After
Parking on a Hill.........................................4-59
Where to Put the Restraint...............................1-39
Why Safety Belts Work....................................1-10
Window Lockout.............................................2-16
Windows.......................................................2-14
Power........................................................2-15
Windshield Washer Fluid Level Check................6-11
Windshield Washer.........................................3-10
Fluid..........................................................5-37
Windshield Wiper............................................5-52
Blade Replacement......................................5-52
Fuses........................................................5-89
Windshield Wipers............................................ 3-9
Winter Driving................................................4-39
Wiper Blade Check.........................................6-12
Y
Your Vehicle and the Environment....................... 6-2
16