2008 CADILLAC XLR run flat

Service............................................................6-3
Accessories and Modications..........................6-3
California Proposition 65 Warning.....................6-3
California Perchlorate Materials Requirements......6-4
Doing Your Own Service Work.........................6-4
Adding Equipment to the Outside of
Your Vehicle..............................................6-4
Fuel................................................................6-5
Gasoline Octane............................................6-5
Gasoline Specications....................................6-5
California Fuel...............................................6-6
Additives.......................................................6-6
Fuels in Foreign Countries...............................6-7
Filling the Tank..............................................6-7
Filling a Portable Fuel Container.....................6-10
Checking Things Under the Hood....................6-10
Hood Release..............................................6-11
Engine Compartment Overview.......................6-12
Engine Oil...................................................6-16
Engine Oil Life System..................................6-20
Engine Air Cleaner/Filter................................6-22
Automatic Transmission Fluid.........................6-24
Engine Coolant.............................................6-24
Coolant Surge Tank Pressure Cap..................6-27Engine Overheating.......................................6-27
Overheated Engine Protection
Operating Mode........................................6-29
Cooling System............................................6-30
Power Steering Fluid.....................................6-35
Windshield Washer Fluid................................6-36
Brakes........................................................6-37
Battery........................................................6-40
Jump Starting...............................................6-41
Rear Axle.......................................................6-46
Headlamp Aiming...........................................6-47
Headlamp Vertical Aiming..............................6-48
Bulb Replacement..........................................6-50
Windshield Replacement.................................6-50
Windshield Wiper Blade Replacement..............6-50
Tires..............................................................6-52
Winter Tires (XLR-V).....................................6-53
Tire Sidewall Labeling...................................6-54
Tire Terminology and Denitions.....................6-56
Run-Flat Tires..............................................6-58
Ination - Tire Pressure.................................6-60
Tire Pressure Monitor System.........................6-61
Tire Pressure Monitor Operation.....................6-63
Section 6 Service and Appearance Care
6-1

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

3. Lift the vehicle with the jack, making sure the jack
spans at least two of the crossmember ribs (B).
For more information, seeDoing Your Own Service
Work on page 6-4.
If a Tire Goes Flat
It is unusual for a tire to blow out while you are driving,
especially if you maintain your tires properly. If air
goes out of a tire, it is much more likely to leak out
slowly. SeeTires on page 6-52for additional
information.
Your vehicle, when new, had run-at tires. This type of
tire can operate effectively with no air pressure, so
you will not need to stop on the side of the road
to change a at tire. You can just keep on driving.
The shorter the distance you drive and the slower the
speed, the greater the chance that the run-at tire
will not have to be replaced. Run-at tires perform so
well without any air that a Tire Pressure Monitor (TPM)
is used to alert you if a tire has lost pressure.
SeeRun-Flat Tires on page 6-58andTire Pressure
Monitor System on page 6-61.
6-78

{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

Engine
Air Cleaner/Filter.........................................6-22
Check and Service Engine Soon Light............3-54
Coolant......................................................6-24
Coolant Temperature Gage...........................3-53
Drive Belt Routing.......................................7-14
Engine Compartment Overview......................6-12
Exhaust.....................................................2-34
Oil .............................................................6-16
Oil Life System...........................................6-20
Oil Pressure Gage.......................................3-57
Overheated Protection Operating Mode...........6-29
Overheating................................................6-27
Running While Parked..................................2-35
Starting......................................................2-24
Enter Destination............................................4-28
Entry/Exit Lighting...........................................3-32
Event Data Recorders.....................................8-18
Extender, Safety Belt.......................................1-23
Exterior Lamps...............................................3-28
Exterior Lighting Battery Saver..........................3-32F
Filter
Engine Air Cleaner......................................6-22
Finish Damage...............................................6-87
Flashers, Hazard Warning.................................. 3-6
Flash-to-Pass................................................... 3-9
Flat Tire........................................................6-78
Floor Mats.....................................................2-52
Fluid.............................................................6-24
Power Steering...........................................6-35
Windshield Washer......................................6-36
Fog Lamp
Fog ...........................................................3-30
Fog Lamp Light..............................................3-58
Fuel............................................................... 6-5
Additives...................................................... 6-6
California Fuel.............................................. 6-6
Filling a Portable Fuel Container....................6-10
Filling the Tank............................................. 6-7
Fuels in Foreign Countries.............................. 6-7
Gage.........................................................3-59
Gasoline Octane........................................... 6-5
Gasoline Specications.................................. 6-5
Fuses
Fuses and Circuit Breakers...........................6-90
Instrument Panel Fuse Block.........................6-90
Underhood Fuse Block.................................6-94
Windshield Wiper.........................................6-90
5

Rearview Mirror, Automatic Dimming
with OnStar®..............................................2-36
Reclining Seatbacks, Power............................... 1-4
Recommended Fluids and Lubricants.................7-11
Recreational Vehicle Towing.............................5-27
Remote, Keyless Access System................2-5, 4-50
Replacement, Windshield.................................6-50
Reporting Safety Defects
Canadian Government..................................8-15
General Motors...........................................8-16
United States Government............................8-15
Restraint System Check
Checking the Restraint Systems....................1-52
Replacing Restraint System Parts
After a Crash..........................................1-53
Retained Accessory Power (RAP)......................2-24
Retractable Hardtop........................................2-54
Lowering....................................................2-54
Raising......................................................2-55
Roadside
Service........................................................ 8-7
Rocking Your Vehicle to Get it Out....................5-22
Route Preference............................................4-37
Routing, Engine Drive Belt...............................7-14
Run-Flat Tires................................................6-58
Running the Engine While Parked.....................2-35S
Safety Belt
Reminder Light............................................3-46
Safety Belts
Care of......................................................6-83
How to Wear Safety Belts Properly................1-11
Lap-Shoulder Belt........................................1-20
Safety Belt Extender....................................1-23
Safety Belt Use During Pregnancy.................1-22
Safety Belts Are for Everyone......................... 1-6
Safety Warnings and Symbols.............................. iv
Scheduled Maintenance..................................... 7-4
Seats
Heated and Cooled Seats.............................. 1-3
Memory, Mirrors............................................ 1-3
Power Lumbar.............................................. 1-2
Power Reclining Seatbacks............................. 1-4
Power Seats................................................. 1-2
Securing a Child Restraint
Right Front Seat Position..............................1-32
Security Light.................................................3-58
Service........................................................... 6-3
Accessories and Modications......................... 6-3
Adding Equipment to the Outside
of Your Vehicle.......................................... 6-4
11

Tires (cont.)
Inspection and Rotation................................6-65
Lifting Your Vehicle......................................6-74
Pressure Monitor Operation...........................6-63
Pressure Monitor System..............................6-61
Run-Flat.....................................................6-58
Tire Sidewall Labeling..................................6-54
Tire Terminology and Denitions....................6-56
Uniform Tire Quality Grading.........................6-69
Wheel Alignment and Tire Balance.................6-70
Wheel Replacement.....................................6-70
When It Is Time for New Tires......................6-66
Winter Tires................................................6-53
Towing
Recreational Vehicle.....................................5-27
Towing a Trailer..........................................5-27
Your Vehicle...............................................5-27
Traction
Control System (TCS).................................... 5-6
Control System Warning Light.......................3-52
Limited-Slip Rear Axle.................................... 5-7Traction (cont.)
Magnetic Ride Control................................... 5-7
StabiliTrak
®System....................................... 5-8
Transmission
Fluid, Automatic...........................................6-24
Transmission Operation, Automatic....................2-26
Trip Computer
Oil Life Indicator..........................................3-80
Trip Odometer................................................3-45
Trunk............................................................2-13
Turn and Lane-Change Signals.......................... 3-8
Turn Signal/Multifunction Lever........................... 3-8
Twilight Sentinel
®............................................3-31
U
Ultrasonic Rear Parking Assist (URPA)...............2-38
Uniform Tire Quality Grading............................6-69
Universal Home Remote System.......................2-44
Operation...................................................2-45
Using this Manual............................................... iv
13