warning CADILLAC XLR 2008 1.G Repair Manual

Treadwear Indicators:Narrow bands, sometimes
called wear bars, that show across the tread of
a tire when only 1/16 inch (1.6 mm) of tread
remains. SeeWhen It Is Time for New Tires on
page 6-66.
UTQGS (Uniform Tire Quality Grading
Standards)
:A tire information system that
provides consumers with ratings for a tire’s
traction, temperature, and treadwear. Ratings are
determined by tire manufacturers using
government testing procedures. The ratings are
molded into the sidewall of the tire. SeeUniform
Tire Quality Grading on page 6-69.
Vehicle Capacity Weight
:The number of
designated seating positions multiplied by
150 lbs (68 kg) plus the rated cargo load.
SeeLoading Your Vehicle on page 5-22.
Vehicle Maximum Load on the Tire
:Load on
an individual tire due to curb weight, accessory
weight, occupant weight, and cargo weight.
Vehicle Placard
:A label permanently attached to
a vehicle showing the vehicle’s capacity weight
and the original equipment tire size and
recommended ination pressure. See “Tire and
Loading Information Label” underLoading
Your Vehicle on page 5-22.
Run-Flat Tires
Your vehicle, when new, had run-at tires. There is no
spare tire, no tire changing equipment, and no place
to store a tire in the vehicle. Run-at tires perform
so well without any air that a Tire Pressure Monitor
System (TPMS) is used to alert you if a tire has
lost pressure.
{CAUTION:
When the low tire warning light is displayed on
the instrument panel cluster, your vehicle’s
handling capabilities will be reduced during
severe maneuvers. If you drive too fast, you
could lose control of your vehicle. You or others
could be injured. Do not drive over 55 mph
(90 km/h) when the low tire warning light is
displayed. Drive cautiously and check your tire
pressures as soon as you can.
If a tire goes at, you will not need to stop on the side
of the road to change the tire. You can just keep on
driving. The shorter the distance you drive and the
slower the speed, the greater the chance that the tire
6-58

Tire Pressure Monitor Operation
The Tire Pressure Monitor System (TPMS) is designed
to warn the driver when a low tire pressure condition
exists. TPMS sensors are mounted onto each tire
and wheel assembly on your vehicle. The TPMS
sensors monitor the air pressure in the vehicle’s tires
and transmits the tire pressure readings to a receiver
located in the vehicle.
When a low tire pressure
condition is detected, the
TPMS illuminates the
low tire pressure warning
light, located in the
instrument panel cluster.
At the same time a message to check the pressure in a
specic tire appears on the Driver Information Center
(DIC) display. The low tire pressure warning light
and the DIC warning message appear at each ignition
cycle until the tires are inated to the correct ination
pressure. Using the DIC, tire pressure levels canbe viewed by the driver. For additional information and
details about the DIC operation and displays see
DIC Operation and Displays on page 3-60andDIC
Warnings and Messages on page 3-63.
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 could 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. SeeLoading
Your Vehicle on page 5-22, for an example of the
Tire and Loading Information label and its location on
your vehicle. Also seeInflation - Tire Pressure on
page 6-60for additional information.
Your vehicle’s TPMS can warn you about a low tire
pressure condition but it does not replace normal
tire maintenance. SeeTire Inspection and Rotation on
page 6-65,When It Is Time for New Tires on page 6-66,
andTires on page 6-52.
Notice:Liquid tire sealants could damage the
Tire Pressure Monitor System (TPMS) sensors.
Sensor damage caused by using a tire sealant is not
covered by your warranty. Do not use liquid tire
sealants.
6-63

TPMS Malfunction Light and Message
The TPMS will not function properly if one or more of the
TPMS sensors are missing or inoperable. When the
system detects a malfunction, the low tire warning light
ashes for about one minute and then stays on for
the remainder of the ignition cycle. A DIC warning
message is also displayed. The low tire warning light
and DIC warning message come on at each ignition
cycle until the problem is corrected. Some of the
conditions that can cause the malfunction light and
DIC message to come on are:
The TPMS sensor matching process was not done
or not completed successfully. The DIC message
should go off after successfully completing the
sensor matching process.
One or more TPMS sensors are missing or
damaged. Under these conditions the TPMS
malfunction light (low tire warning light) comes on,
and at the same time the DIC message is
displayed. The DIC message and TPMS malfunction
light should go off once the TPMS sensors are
installed and the sensor matching process is
performed successfully.
Replacement tires or wheels do not match your
vehicle’s original equipment tires or wheels.
Tires and wheels other than those recommended
for your vehicle could prevent the TPMS from
functioning properly. SeeBuying New Tires on
page 6-67.
Operating electronic devices or being near facilities
using radio wave frequencies similar to the TPMS
could cause the TPMS sensors to malfunction.
If the TPMS is not functioning it cannot detect or
signal a low tire condition. See your dealer/retailer for
service if the TPMS malfunction light and DIC 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 your 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/retailer for service.
6-64

{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 that have a tire pressure monitoring system
could give an inaccurate low-pressure warning if
non-TPC Spec rated tires are installed on it. 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 6-61.
Your vehicle’s original equipment tires are listed on the
Tire and Loading Information label. SeeLoading
Your Vehicle on page 5-22, for more information about
the Tire and Loading Information label and its location
on your vehicle.
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 6-67andAccessories
and Modifications on page 6-3for additional information.
6-68

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.
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.
6-69

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
specied 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 inated and
not overloaded. Excessive speed, underination,
or excessive loading, either separately or in
combination, can cause heat buildup and possible
tire failure.
Wheel Alignment and Tire Balance
The tires and wheels on your vehicle were aligned
and balanced carefully at the factory to give you the
longest tire life and best overall performance.
Adjustments to wheel alignment and tire balancing will
not be necessary on a regular basis. However, if
you notice unusual tire wear or your vehicle pulling to
one side or the other, the alignment might need to
be checked. If you notice your vehicle vibrating when
driving on a smooth road, the tires and wheels
might need to be rebalanced. See your dealer/retailer
for proper diagnosis.
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/retailer if any of these conditions exist.
Your dealer/retailer 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.
6-70

{CAUTION:
When the TIRE FLAT MAX SPD 55, REDUCED
HNDLG message is displayed on the Driver
Information Center, your vehicle’s handling
capabilities will be reduced during severe
maneuvers. If you drive too fast, you could
lose control of your vehicle. You or others
could be injured. Don’t drive over 55 mph
(90 km/h) when the TIRE FLAT MAX SPD 55,
REDUCED HNDLG message is displayed.
Drive cautiously and check your tire pressures
as soon as you can.
If the TPM system detects a tire pressure below
5 psi (34 kPa), the TIRE FLAT MAX SPD 55, REDUCED
HNDLG warning message is displayed on the Driver
Information Center (DIC). SeeDIC Operation and
Displays on page 3-60andDIC Warnings and Messages
on page 3-63for information and details about the
DIC operation and displays.
{CAUTION:
Special tools and procedures are required to
service a run-at tire. If these special tools and
procedures are not used you or others could
be injured and your vehicle could be damaged.
Always be sure the proper tools and
procedures, as described in the service
manual, are used.
Notice:Using liquid sealants can damage the tire
valves and tire pressure monitor sensors in your
vehicle’s run-at tires. This damage would not
be covered by warranty. Do not use liquid sealants
in your vehicle’s run-at tires.
To order a service manual, seeService Publications
Ordering Information on page 8-16.
If a tire goes at, the stability control system will turn
on automatically even if it was disabled by the driver.
When a at tire condition exists the StabiliTrak
®system
cannot be turned off. SeeStabiliTrak®System on
page 5-8.
6-79

A
Accessories and Modications............................ 6-3
Adaptive Cruise Control...................................3-15
Adaptive Forward Lighting System.....................3-30
Adding Equipment to Your Airbag-Equipped
Vehicle.......................................................1-51
Additives, Fuel................................................. 6-6
Add-On Electrical Equipment............................6-89
Air Cleaner/Filter, Engine.................................6-22
Air Conditioning..............................................3-38
Airbag
Passenger Status Indicator...........................3-47
Readiness Light..........................................3-46
Airbag System................................................1-36
What Will You See After an Airbag Inates?....1-44
When Should an Airbag Inate?....................1-41
Where Are the Airbags?...............................1-39
Airbag Systems
Adding Equipment to Your Airbag-Equipped
Vehicle...................................................1-51
How Does an Airbag Restrain?......................1-43
Passenger Sensing System...........................1-45
Servicing Your Airbag-Equipped Vehicle..........1-50
What Makes an Airbag Inate?......................1-43
Antenna, Diversity Antenna System...................3-85Antenna, XM™ Satellite Radio Antenna
System......................................................3-85
Antilock Brake System (ABS)............................. 5-5
Antilock Brake, System Warning Light................3-51
Appearance Care
Aluminum or Chrome-Plated Wheels..............6-85
Care of Safety Belts....................................6-83
Chemical Paint Spotting...............................6-87
Cleaning Exterior Lamps/Lenses....................6-84
Fabric/Carpet..............................................6-81
Fiberglass Springs.......................................6-87
Finish Care.................................................6-84
Finish Damage............................................6-87
Instrument Panel, Vinyl, and Other
Plastic Surfaces.......................................6-82
Interior Cleaning
..........................................6-80
Leather......................................................6-82
Sheet Metal Damage...................................6-86
Speaker Covers..........................................6-82
Tires..........................................................6-86
Underbody Maintenance...............................6-87
Vehicle Care/Appearance Materials................6-88
Washing Your Vehicle...................................6-83
Weatherstrips..............................................6-83
Windshield and Wiper Blades........................6-85
Wood Panels..............................................6-82
1

Appointments, Scheduling Service.....................8-10
Ashtray.........................................................3-37
Audio System.........................................3-81, 4-54
Audio Steering Wheel Controls......................3-82
Care of Your CD Player...............................3-85
Care of Your CDs........................................3-85
Diversity Antenna System.............................3-85
Radio Reception..........................................3-84
Theft-Deterrent Feature................................3-82
XM™ Satellite Radio Antenna System............3-85
Automatic Door Lock.......................................2-12
Automatic Transmission
Fluid..........................................................6-24
Operation...................................................2-26
Avoid Point/Area, Edit......................................4-26
B
Battery..........................................................6-40
Exterior Lighting Battery Saver......................3-32
Run-Down Protection...................................3-33
Brake
Emergencies................................................ 5-5
Brakes..........................................................6-37
System Warning Light..................................3-50Braking........................................................... 5-4
Braking in Emergencies..................................... 5-5
Break-In, New Vehicle.....................................2-23
Bulb Replacement...........................................6-50
Headlamp Aiming........................................6-47
Buying New Tires...........................................6-67
C
California Fuel.................................................. 6-6
California Perchlorate Materials Requirements....... 6-4
California Proposition 65 Warning....................... 6-3
Canadian Owners............................................... iii
Capacities and Specications............................6-97
Carbon Monoxide...................2-13, 2-34, 5-17, 5-27
Care of
Safety Belts................................................6-83
Your CD Player...........................................3-85
Your CDs ...................................................3-85
CD
Six-Disc Changer.........................................4-67
CD/DVD Player..............................................4-70
Center Console Storage Area...........................2-52
Chains, Tire...................................................6-73
Charging System Light....................................3-49
2

Customer Assistance Information (cont.)
GM Mobility Reimbursement Program............... 8-7
Reporting Safety Defects to General Motors....8-16
Reporting Safety Defects to the
Canadian Government..............................8-15
Reporting Safety Defects to the
United States Government.........................8-15
Roadside Service.......................................... 8-7
Service Publications Ordering Information........8-16
D
Database Coverage Explanations......................4-53
Daytime Running Lamps..................................3-29
Defensive Driving............................................. 5-2
Diversity Antenna System.................................3-85
Doing Your Own Service Work........................... 6-4
Door
Automatic Door Lock....................................2-12
Locks........................................................2-10
Power Door Locks.......................................2-12
Programmable Automatic Door Unlock............2-12
Driver Information Center (DIC).........................3-60
DIC Operation and Displays..........................3-60
DIC Vehicle Personalization..........................3-76
DIC Warnings and Messages........................3-63
Other Messages..........................................3-74Driving
At Night.....................................................5-14
Before a Long Trip......................................5-15
Defensive..................................................... 5-2
Drunken....................................................... 5-2
Highway Hypnosis.......................................5-16
Hill and Mountain Roads..............................5-16
In Rain and on Wet Roads...........................5-14
Rocking Your Vehicle to Get it Out.................5-22
Winter........................................................5-17
Dual Climate Control System............................3-38
DVD, CD Player.............................................4-70
E
Edit
Avoid Point/Area..........................................4-26
Memory Point.............................................4-20
Waypoint....................................................4-24
EDR .............................................................8-17
Electrical System
Add-On Equipment......................................6-89
Fuses and Circuit Breakers...........................6-90
Instrument Panel Fuse Block.........................6-90
Power Windows and Other Power Options......6-90
Underhood Fuse Block.................................6-94
Windshield Wiper Fuses...............................6-90
4