2005 CADILLAC XLR check engine light

Adding Equipment to the Outside of
Your Vehicle
Things you might add to the outside of your vehicle can
affect the airow around it. This may cause wind
noise and affect windshield washer performance. Check
with your dealer before adding equipment to the
outside of your vehicle.
Fuel
Use of the recommended fuel is an important part of the
proper maintenance of your vehicle.
Gasoline Octane
Use premium unleaded gasoline with a posted octane of
91 or higher for best performance. You may also use
middle grade or regular unleaded gasoline rated at
87 octane or higher, but your vehicle’s acceleration may
be slightly reduced. If the octane is less than 87, you may
get a heavy knocking noise when you drive. If this occurs,
use a gasoline rated at 87 octane or higher as soon as
possible. Otherwise, you might damage your engine.
Gasoline Specications
It is recommended that gasoline meet specications
which were developed by automobile manufacturers
around the world and contained in the World-Wide Fuel
Charter which is available from the Alliance of
Automobile Manufacturers at
www.autoalliance.org/fuel_charter.htm. Gasoline
meeting these specications could provide improved
driveability and emission control system performance
compared to other gasoline.
California Fuel
If your vehicle is certied to meet California Emission
Standards (see the underhood emission control label), it
is designed to operate on fuels that meet California
specications. If this fuel is not available in states
adopting California emissions standards, your vehicle
will operate satisfactorily on fuels meeting federal
specications, but emission control system performance
may be affected. The malfunction indicator lamp may
turn on and your vehicle may fail a smog-check test. See
Malfunction Indicator Lamp on page 3-55. If this
occurs, return to your authorized GM dealer for
diagnosis. If it is determined that the condition is caused
by the type of fuel used, repairs may not be covered
by your warranty.
6-5

A 50/50 mixture of clean, drinkable water and
DEX-COOL®coolant will:
Giving freezing protection down to−34°F (−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as
they should.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
What to Use
Use a mixture of one-halfclean, drinkable waterand
one-half DEX-COOL®coolant which will not damage
aluminum parts. If you use this coolant mixture, you do
not need to add anything else.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.
Notice:If you use an improper coolant mixture,
your engine could overheat and be badly damaged.
The repair cost would not be covered by your
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core and
other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
Notice:If you use the proper coolant, you do not
have to add extra inhibitors or additives which claim
to improve the system. These can be harmful.
6-21

Tire Pressure Monitor System
The Tire Pressure Monitor (TPM) System on your vehicle,
uses radio and sensor technology to check tire pressure
levels. Sensors, mounted on each tire and wheel
assembly transmit tire pressure readings to a receiver
located in the vehicle. The TPM sensors transmit tire
pressure readings once every 60 seconds while the
vehicle is being driven and once every 60 minutes when
the vehicle is stationary for more than 15 minutes. Using
the Driver Information Center (DIC), tire pressure levels
can be viewed by the driver. The TPM system also uses
the DIC to warn the driver when air pressure, in one or
more tires, falls below 25 psi (172 kPa) or is above
42 psi (290 kPa). For additional information and details
about the DIC operation and displays seeDIC Controls
and Displays on page 3-61andDIC Warnings and
Messages on page 3-64.
A low tire warning light also appears on the instrument
panel cluster when a low tire condition exists. The
DIC message, CHECK TIRE PRESSURE and the low
tire pressure warning light will be shown each time
the engine is started and stay on until the low tire
condition is corrected.When the tire pressure
monitoring system warning
light is lit, one or more
of your tires is signicantly
under-inated.
You should stop and check your tires as soon as
possible, and inate them to the proper pressure as
indicated on the vehicle’s tire information placard.
Driving on a signicantly under-inated tire causes the
tire to overheat and can lead to tire failure. Under-ination
also reduces fuel efficiency and tire tread life, and may
affect the vehicle’s handling and stopping ability. Each
tire, including the spare, should be checked monthly
when cold and set to the recommended ination pressure
as specied in the vehicle placard and owner’s manual.
The Tire and Loading Information Label (tire information
placard) is on the rear edge of the driver’s door, below the
door latch. This label shows the size of your vehicle’s
original tires and the correct ination pressure for your
vehicle’s tires when they are cold. SeeLoading Your
Vehicle on page 5-30.
Your vehicle’s TPM system can alert you about a low or
high tire pressure condition but it does not replace
normal tire maintenance. SeeTire Inspection and
Rotation on page 6-57
6-55

Maintenance Footnotes
†The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify
the emission warranty or limit recall liability prior to
the completion of the vehicle’s useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the
maintenance be recorded.
(a)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired
and the uid level checked. Add uid if needed.
(b)Visually inspect wiper blades for wear or cracking.
Replace blade inserts that appear worn or damaged
or that streak or miss areas of the windshield.
(c)Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages
are working properly. Look for any other loose or
damaged safety belt system parts. If you see anything
that might keep a safety belt system from doing its
job, have it repaired. Have any torn or frayed safety belts
replaced. Also look for any opened or broken airbag
coverings, and have them repaired or replaced.
(The airbag system does not need regular maintenance.)(d)Lubricate the trunk key lock cylinder. Lubricate all
body door hinges. Lubricate all hinges and latches,
including those for the hood, trunk, console door and
any folding seat hardware. More frequent lubrication
may be required when exposed to a corrosive
environment. Applying silicone grease on weatherstrips
with a clean cloth will make them last longer, seal
better and not stick or squeak.
(e)If you drive regularly under dusty conditions, the
lter may require replacement more often.
(f)Change automatic transmission uid and lter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
Uses such as high performance operation.
(g)Drain, ush and rell cooling system. See Engine
Coolant on page 6-20for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and ller neck.
Pressure test the cooling system and pressure cap.
(h)If you drive regularly under dusty conditions, inspect
the lter at each engine oil change.
7-7

Audio System(s) (cont.)
Theft-Deterrent Feature................................3-78
Understanding Radio Reception.....................3-80
XM™ Satellite Radio Antenna System............3-81
Automatic Transmission
Fluid..........................................................6-20
Operation...................................................2-25
Avoid Point/Area, Edit......................................4-20
B
Battery..........................................................6-36
Exterior Lighting Battery Saver......................3-32
Run-Down Protection...................................3-33
Before Leaving on a Long Trip.........................5-22
Brake
Anti-Lock Brake System (ABS)........................ 5-6
Emergencies................................................ 5-8
Parking......................................................2-28
System Warning Light..................................3-52
Brakes..........................................................6-33
Braking........................................................... 5-5
Braking in Emergencies..................................... 5-8
Break-In, New Vehicle.....................................2-21
Bulb Replacement...........................................6-44
Headlamp Aiming........................................6-42
Buying New Tires...........................................6-58
C
California Fuel.................................................. 6-5
Canadian Owners................................................ ii
Capacities and Specications............................6-85
Carbon Monoxide...................2-13, 2-32, 5-25, 5-35
Care of
Safety Belts................................................6-73
Your CD Player...........................................3-80
Your CDs ...................................................3-80
CD
Six-Disc Changer.........................................4-61
CD/DVD Player..............................................4-63
Center Console Storage Area...........................2-42
Chains, Tire...................................................6-63
Check
Engine Light...............................................3-55
Checking Things Under the Hood......................6-10
Chemical Paint Spotting...................................6-77
Child Restraints
Child Restraint Systems...............................1-24
Infants and Young Children...........................1-21
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-28
Older Children.............................................1-19
Securing a Child Restraint Designed for the
LATCH System........................................1-30
2

D
Database Coverage Explanations......................4-45
Daytime Running Lamps..................................3-30
Defensive Driving............................................. 5-2
Diversity Antenna System.................................3-81
Doing Your Own Service Work........................... 6-4
Door
Locks.......................................................... 2-9
Power Door Locks.......................................2-11
Driver
Position, Safety Belt.....................................1-10
Driver Information Center (DIC).........................3-61
DIC Controls and Displays............................3-61
DIC Vehicle Personalization..........................3-73
DIC Warnings and Messages........................3-64
Other Messages..........................................3-72
Driving
At Night.....................................................5-16
City...........................................................5-20
Defensive..................................................... 5-2
Drunken....................................................... 5-2
Freeway.....................................................5-21
Hill and Mountain Roads..............................5-23
In Rain and on Wet Roads...........................5-18
Rocking Your Vehicle to Get it Out.................5-30
Winter........................................................5-25
Dual Climate Control System............................3-40
E
Edit
Avoid Point/Area..........................................4-20
Memory Point.............................................4-13
Waypoint....................................................4-17
Electrical System
Add-On Equipment......................................6-80
Fuses and Circuit Breakers...........................6-80
Instrument Panel Fuse Block.........................6-81
Power Windows and Other Power Options......6-80
Underhood Fuse Block.................................6-83
Windshield Wiper Fuses...............................6-80
Engine
Air Cleaner/Filter.........................................6-18
Battery.......................................................6-36
Check and Service Engine Soon Light............3-55
Coolant......................................................6-20
Coolant Heater............................................2-24
Coolant Temperature Gage...........................3-54
Engine Compartment Overview......................6-12
Exhaust.....................................................2-32
Oil .............................................................6-13
Oil Pressure Gage.......................................3-58
Overheated Protection Operating Mode...........6-25
Overheating................................................6-23
Starting......................................................2-23
4

Maintenance Schedule (cont.)
Normal Maintenance Replacement Parts.........7-13
Owner Checks and Services........................... 7-8
Recommended Fluids and Lubricants.............7-11
Scheduled Maintenance................................. 7-4
Using Your................................................... 7-2
Your Vehicle and the Environment................... 7-2
Malfunction Indicator Light................................3-55
Map Pocket...................................................2-43
Maps............................................................4-33
Memory Mirrors..............................................2-54
Memory Point, Edit.........................................4-13
Memory Seat.................................................2-54
Memory Steering Wheel Controls......................2-54
Message
DIC Warnings and Messages........................3-64
Mirrors
Automatic Dimming Rearview with OnStar
®.......2-34
Memory.....................................................2-54
Outside Automatic Dimming Mirror.................2-35
Outside Convex Mirror.................................2-36
Outside Curb View Assist Mirror....................2-35
Outside Power Heated Mirrors.......................2-34
MyGMLink.com................................................ 8-3
N
Navigation.................................................4-2, 4-4
Using the System.......................................... 4-4
New Vehicle Break-In......................................2-21
Normal Maintenance Replacement Parts............7-13
O
Odometer......................................................3-48
Odometer, Trip...............................................3-48
Off-Road Recovery..........................................5-13
Oil
Engine.......................................................6-13
Engine Oil Pressure Gage............................3-58
Life Indicator...............................................3-77
Older Children, Restraints................................1-19
Online Owner Center........................................ 8-3
OnStar
®System.....................................2-36, 4-42
Ordering
Map DVDs.................................................4-45
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-45
8

R
Radio............................................................4-45
Personalization with Home and Away Feature....4-69
Radios..........................................................3-78
Care of Your CD Player...............................3-80
Care of Your CDs........................................3-80
Theft-Deterrent............................................3-78
Understanding Reception..............................3-80
Rainsense™ Wipers........................................3-10
Raising the Retractable Hardtop........................2-46
Reading Lamps..............................................3-33
Rear Axle......................................................6-41
Limited-Slip.................................................. 5-9
Rear Storage Area..........................................2-44
Rearview Mirror, Automatic Dimming
with OnStar
®..............................................2-34
Reclining Seatback, Power................................. 1-4
Recommended Fluids and Lubricants.................7-11
Recreational Vehicle Towing.............................5-35
Remote Keyless Entry System..........................4-42
Reporting Safety Defects
Canadian Government..................................8-11
General Motors...........................................8-11
United States Government............................8-11Restraint System Check
Checking Your Restraint Systems...................1-48
Replacing Restraint System Parts After
a Crash..................................................1-48
Restraint Systems
Checking....................................................1-48
Replacing Parts...........................................1-48
Retained Accessory Power (RAP)......................2-22
Retractable Hardtop........................................2-45
Lowering....................................................2-45
Raising......................................................2-46
Roadside
Service........................................................ 8-6
Rocking Your Vehicle to Get it Out....................5-30
Route Preference............................................4-31
Run-Flat Tires................................................6-52
Running Your Engine While You Are Parked.......2-33
S
Safety Belt
Pretensioners..............................................1-18
Reminder Light............................................3-48
10