traction control CADILLAC CTS 2008 2.G Owner's Manual

You need new tires if any of the following statements
are true:
You can see the indicators at three or more places
around the tire.
You can see cord or fabric showing through the
tire’s rubber.
The tread or sidewall is cracked, cut, or snagged
deep enough to show cord or fabric.
The tire has a bump, bulge, or split.
The tire has a puncture, cut, or other damage that
cannot be repaired well because of the size or
location of the damage.
The rubber in tires degrades over time, even if they are
not being used. This is also true for the spare tire, if your
vehicle has one. Multiple conditions affect how fast this
aging takes place, including temperatures, loading
conditions, and ination pressure maintenance. With
proper care and maintenance tires will typically wear out
before they degrade due to age. If you are unsure about
the need to replace your tires as they get older, consult
the tire manufacturer for more information.
Buying New Tires
GM has developed and matched specic tires for your
vehicle. The original equipment tires installed on
your vehicle, when it was new, were designed to meet
General Motors Tire Performance Criteria Specication
(TPC Spec) system rating. If you need replacement
tires, GM strongly recommends that you get tires with
the same TPC Spec rating. This way, your vehicle
will continue to have tires that are designed to give
the same performance and vehicle safety, during
normal use, as the original tires.
GM’s exclusive TPC Spec system considers over a
dozen critical specications that impact the overall
performance of your vehicle, including brake system
performance, ride and handling, traction control, and
tire pressure monitoring performance. GM’s TPC Spec
number is molded onto the tire’s sidewall near the tire
size. If the tires have an all-season tread design, the
TPC Spec number will be followed by an MS for mud
and snow. SeeTire Sidewall Labeling on page 5-60
for additional information.
GM recommends replacing tires in sets of four. This is
because uniform tread depth on all tires will help keep
your vehicle performing most like it did when the tires
were new. Replacing less than a full set of tires can affect
the braking and handling performance of your vehicle.
SeeTire Inspection and Rotation on page 5-74for
information on proper tire rotation.
5-76

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, antilock 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 5-76andAccessories
and Modifications on page 5-4for additional information.
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 (NHTSA), 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 (UTQG)
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.
5-78

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.
5-79

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.
If a Tire Goes Flat
It is unusual for a tire to blowout while you are driving,
especially if you maintain your tires properly. SeeTires
on page 5-58. If air goes out of a tire, It is much more
likely to leak out slowly. But if you should ever have a
blowout, here are a few tips about what to expect and
what to do:
If a front tire fails, the at tire will create a drag that
pulls the vehicle toward that side. Take your foot off the
accelerator pedal and grip the steering wheel rmly.
Steer to maintain lane position, and then gently brake
to a stop well out of the traffic lane.
A rear blowout, particularly on a curve, acts much like a
skid and may require the same correction you would use
in a skid. In any rear blowout, remove your foot from the
accelerator pedal. Get the vehicle under control by
steering the way you want the vehicle to go. It may be
very bumpy and noisy, but you can still steer. Gently
brake to a stop, well off the road if possible.
5-82

I
Ignition Positions....................................2-32, 2-34
Immobilizer....................................................2-29
Immobilizer Operation..............................2-30, 2-31
Infants and Young Children, Restraints...............1-35
Ination - Tire Pressure...................................5-66
Inator Kit, Tire.......................................5-84, 5-93
Instrument Panel
Brightness..................................................3-20
Cluster.......................................................3-31
Overview..................................................... 3-4
Storage Area..............................................2-63
J
Jump Starting.................................................5-45
K
Keyless Access System..................................... 2-9
Keyless Access System, Operation....................2-10
Keyless Entry System....................................... 2-6
Keys............................................................... 2-4
L
Labeling, Tire Sidewall.....................................5-60
Lamps
Exterior Lighting Battery Saver......................3-20
Reading.....................................................3-21
Lap-Shoulder Belt...........................................1-26
LATCH System
Child Restraints...........................................1-43
License Plate Lamps.......................................5-56
Light
Airbag Readiness........................................3-34
Anti-lock Brake System (ABS) Warning...........3-39
Brake System Warning.................................3-38
Charging System.........................................3-37
Cruise Control.............................................3-46
Engine Coolant Temperature Warning.............3-40
Fog Lamp ..................................................3-46
Highbeam On.............................................3-47
Lights On Reminder.....................................3-46
Malfunction Indicator....................................3-41
Oil Pressure...............................................3-44
Passenger Airbag Status Indicator..................3-35
Safety Belt Reminders..................................3-33
Security.....................................................3-46
Tire Pressure..............................................3-41
Traction Control System (TCS)/StabiliTrak
®......3-39
Up-Shift.....................................................3-37
7

Traction
Control System (TCS).................................... 4-6
Control System (TCS)/StabiliTrak
®
Warning Light..........................................3-39
Limited-Slip Rear Axle.................................... 4-7
Stabilitrak
®System........................................ 4-8
Transmission
Fluid, Automatic...........................................5-25
Fluid, Manual..............................................5-26
Up-Shift Light..............................................3-37
Transmission Operation, Automatic....................2-38
Transmission Operation, Manual........................2-42
Trip Odometers..............................................3-32
Trunk............................................................2-21
Turn and Lane-Change Signals.......................... 3-8
Turn Signal/Multifunction Lever........................... 3-7
U
Ultrasonic Rear Parking Assist (URPA)...............2-52
Uniform Tire Quality Grading............................5-78
Universal Home Remote System.......................2-58
Operation...................................................2-58
Up-Shift Light.................................................3-37
Using this Manual............................................... iii
V
Vehicle
Control........................................................ 4-3
Damage Warnings........................................... iv
Loading......................................................4-22
Parking Your...............................................2-47
Symbols......................................................... iv
Vehicle Customization, DIC..............................3-69
Vehicle Data Recording and Privacy..................7-18
Vehicle Identication
Number (VIN)............................................5-121
Service Parts Identication Label..................5-121
Vehicle, Remote Start......................................2-16
Ventilated Seats............................................... 1-6
Ventilation Adjustment......................................3-28
Visors...........................................................2-27
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