traction control GMC YUKON DENALI 2005 User Guide

Driving in Rain and on Wet Roads
Rain and wet roads can mean driving trouble. On a wet
road, you cannot stop, accelerate, or turn as well
because your tire-to-road traction is not as good as on
dry roads. And, if your tires do not have much tread
left, you will get even less traction. It is always wise to
go slower and be cautious if rain starts to fall while
you are driving. The surface may get wet suddenly when
your reexes are tuned for driving on dry pavement.The heavier the rain, the harder it is to see. Even if your
windshield wiper blades are in good shape, a heavy
rain can make it harder to see road signs and
traffic signals, pavement markings, the edge of the road,
and even people walking.
It is wise to keep your wiping equipment in good shape
and keep your windshield washer tank lled with washer
uid. Replace your windshield wiper inserts when they
show signs of streaking or missing areas on the
windshield, or when strips of rubber start to separate from
the inserts.
Driving too fast through large water puddles or even
going through some car washes can cause problems,
too. The water may affect your brakes. Try to avoid
puddles. But if you cannot, try to slow down before you
hit them.
{CAUTION:
Wet brakes can cause accidents. They will not
work as well in a quick stop and may cause
pulling to one side. You could lose control of
the vehicle.
After driving through a large puddle of water
or a car wash, apply your brake pedal lightly
until your brakes work normally.
4-31

Uniform Tire Quality Grading
Quality grades can be found where applicable on the
tire sidewall between tread shoulder and maximum
section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National Highway
Traffic Safety Administration, which grades tires by
treadwear, traction and temperature performance. (This
applies only to vehicles sold in the United States.)
The grades are molded on the sidewalls of most
passenger car tires. The Uniform Tire Quality Grading
system does not apply to deep tread, winter-type
snow tires, space-saver or temporary use spare tires,
tires with nominal rim diameters of 10 to 12 inches
(25 to 30 cm), or to some limited-production tires.
While the tires available on General Motors passenger
cars and light trucks may vary with respect to these
grades, they must also conform to federal safety
requirements and additional General Motors Tire
Performance Criteria (TPC) standards.
Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specied government test course.
For example, a tire graded 150 would wear one and
a half (1.5) times as well on the government course as
a tire graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signicantly from the norm
due to variations in driving habits, service practices and
differences in road characteristics and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA, A,
B, and C. Those grades represent the tire’s ability
to stop on wet pavement as measured under controlled
conditions on specied government test surfaces of
asphalt and concrete. A tire marked C may have poor
traction performance. Warning: The traction grade
assigned to this tire is based on straight-ahead braking
traction tests, and does not include acceleration,
cornering, hydroplaning, or peak traction characteristics.
5-70

Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You can’t know how it’s been used
or how far it’s 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.
5-73

Light (cont.)
Highbeam On.............................................3-44
Low Fuel Warning.......................................3-45
Malfunction Indicator....................................3-39
Passenger Airbag Status Indicator..................3-32
Safety Belt Reminder...................................3-30
Security.....................................................3-43
Tire Pressure..............................................3-39
Tow/Haul Mode...........................................3-44
Traction Off................................................3-36
Lighting
Entry.........................................................3-18
Exit...........................................................3-18
Lockout Protection..........................................2-13
Locks
Delayed Locking..........................................2-10
Door........................................................... 2-8
Lockout Protection.......................................2-13
Power Door.................................................. 2-9
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-12
Loss of Control...............................................4-15
Low Fuel Warning Light...................................3-45
Luggage Carrier..............................................2-44
Lumbar
Power Controls............................................. 1-4M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-9
At Least Once a Month.................................. 6-9
At Least Once a Year..................................6-10
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-7
Maintenance Record....................................6-15
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-14
Owner Checks and Services........................... 6-9
Recommended Fluids and Lubricants.............6-12
Scheduled Maintenance................................. 6-4
Using Your................................................... 6-2
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-39
Memory Seat.................................................2-48
Message
DIC Warnings and Messages........................3-50
Mirrors
Automatic Dimming Rearview with OnStar
®,
Compass and Temperature Display.............2-32
Outside Automatic Dimming Mirror with Curb
View Assist.............................................2-36
8

Tires.............................................................5-56
Aluminum Wheels, Cleaning........................5-100
Buying New Tires........................................5-68
Chains.......................................................5-73
Changing a Flat Tire....................................5-74
Cleaning...................................................5-101
If a Tire Goes Flat.......................................5-74
Ination -- Tire Pressure...............................5-62
Inspection and Rotation................................5-66
Installing the Spare Tire................................5-80
Pressure Monitor System..............................5-63
Removing the Flat Tire.................................5-80
Removing the Spare Tire and Tools...............5-76
Secondary Latch System..............................5-86
Spare Tire..................................................5-94
Storing a Flat or Spare Tire and Tools............5-90
Tire Sidewall Labelling..................................5-57
Tire Terminology and Denitions....................5-60
Uniform Tire Quality Grading.........................5-70
Wheel Alignment and Tire Balance.................5-71
Wheel Replacement.....................................5-72
When It Is Time for New Tires......................5-68
Top Strap......................................................1-57
Top Strap Anchor Location...............................1-58
Tow/Haul Mode...............................................2-26
Tow/Haul Mode Light.......................................3-44
Towing
Recreational Vehicle.....................................4-50Towing (cont.)
Towing a Trailer..........................................4-52
Your Vehicle...............................................4-50
Traction
Off Light.....................................................3-36
StabiliTrak
®System....................................... 4-8
Trailer
Recommendations.......................................4-51
Transmission
Fluid, Automatic...........................................5-22
Temperature Gage.......................................3-37
Transmission Operation, Automatic....................2-24
Turn and Lane-Change Signals.......................... 3-8
Turn Signal/Multifunction Lever........................... 3-7
U
Understanding Radio Reception.......................3-100
Uniform Tire Quality Grading............................5-70
V
Vehicle
Control........................................................ 4-5
Damage Warnings........................................... iv
Symbols......................................................... iv
Vehicle Customization, DIC..............................3-61
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