octane CADILLAC XLR 2004 1.G Owners Manual

If the Light Is On Steady
You also may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully install
the cap. See
Filling Your Tank on page 5-7. The
diagnostic system can determine if the fuel cap has
been left off or improperly installed. A loose or missing
fuel cap will allow fuel to evaporate into the atmosphere.
A few driving trips with the cap properly installed
should turn the light off.
Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should turn the light off.Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel. See
Gasoline Octane on page 5-5. Poor fuel quality will
cause your engine not to run as efficiently as designed.
You may notice this as stalling after start-up, stalling
when you put the vehicle into gear, mis®ring, hesitation
on acceleration or stumbling on acceleration. (These
conditions may go away once the engine is warmed up.)
This will be detected by the system and cause the
light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at least
one full tank of the proper fuel to turn the light off.
If none of the above steps have made the light turn off,
your dealer can check the vehicle. Your dealer has
the proper test equipment and diagnostic tools to ®x any
mechanical or electrical problems that may have
developed.
3-50

Service............................................................5-3
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of
Your Vehicle..............................................5-4
Fuel................................................................5-5
Gasoline Octane............................................5-5
Gasoline Speci®cations....................................5-5
California Fuel...............................................5-6
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-7
Filling Your Tank............................................5-7
Filling a Portable Fuel Container.....................5-10
Checking Things Under
the Hood....................................................5-10
Hood Release..............................................5-11
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-13
Engine Air Cleaner/Filter................................5-18
Automatic Transmission Fluid.........................5-19
Engine Coolant.............................................5-20
Coolant Surge Tank Pressure Cap..................5-23
Engine Overheating.......................................5-23
Cooling System............................................5-26
Power Steering Fluid.....................................5-32Windshield Washer Fluid................................5-33
Brakes........................................................5-35
Battery........................................................5-38
Jump Starting...............................................5-39
Rear Axle.......................................................5-45
Headlamp Aiming...........................................5-46
Headlamp Vertical Aiming..............................5-47
Bulb Replacement..........................................5-49
Windshield Wiper Blade Replacement..............5-49
Tires..............................................................5-50
Run-Flat Tires..............................................5-56
In¯ation - Tire Pressure.................................5-57
Tire Pressure Monitor System.........................5-58
Tire Inspection and Rotation...........................5-60
When It Is Time for New Tires.......................5-62
Buying New Tires.........................................5-63
Uniform Tire Quality Grading..........................5-64
Wheel Alignment and Tire Balance..................5-65
Wheel Replacement......................................5-66
Tire Chains..................................................5-68
Lifting Your Vehicle.......................................5-69
If a Tire Goes Flat........................................5-73
Section 5 Service and Appearance Care
5-1

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 Speci®cations
It is recommended that gasoline meet speci®cations
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 speci®cations could provide improved
driveability and emission control system performance
compared to other gasoline.
In Canada, look for the
ªAuto Makers' Choiceº
label on the pump.
Canada Only
5-5

California Fuel
If your vehicle is certi®ed to meet California Emission
Standards (see the underhood emission control label), it
is designed to operate on fuels that meet California
speci®cations. If this fuel is not available in states
adopting California emissions standards, your vehicle
will operate satisfactorily on fuels meeting federal
speci®cations, but emission control system performance
may be affected. The malfunction indicator lamp may
turn on (see
Malfunction Indicator Lamp on page 3-48)
and your vehicle may fail a smog-check test. 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.
Additives
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent engine and fuel system deposits from forming,
allowing your emission control system to work
properly. You should not have to add anything to your
fuel. However, some gasolines contain only the
minimum amount of additive required to meet U.S.
Environmental Protection Agency regulations. General
Motors recommends that you buy gasolines that
are advertised to help keep fuel injectors and intakevalves clean. If your vehicle experiences problems due
to dirty injectors or valves, try a different brand of
gasoline.
Gasolines containing oxygenates, such as ethers and
ethanol, and reformulated gasolines may be available in
your area to contribute to clean air. General Motors
recommends that you use these gasolines, particularly if
they comply with the speci®cations described earlier.
Notice:Your vehicle was not designed for fuel that
contains methanol. Do not use fuel containing
methanol. It can corrode metal parts in your fuel
system and also damage the plastic and rubber
parts. That damage would not be covered under
your warranty.
Some gasolines that are not reformulated for low
emissions may contain an octane-enhancing additive
called methylcyclopentadienyl manganese tricarbonyl
(MMT); ask the attendant where you buy gasoline
whether the fuel contains MMT. General Motors does
not recommend the use of such gasolines. Fuels
containing MMT can reduce the life of spark plugs and
the performance of the emission control system may
be affected. The malfunction indicator lamp may turn on.
If this occurs, return to your authorized GM dealer for
service.
5-6

This schedule is for vehicles that:
·carry passengers and cargo within recommended
limits. You will ®nd these limits on the tire and
loading information label. See
Loading Your Vehicle
on page 4-32.
·are driven on reasonable road surfaces within legal
driving limits.
·use the recommended fuel. SeeGasoline Octane
on page 5-5
.
The services in
Scheduled Maintenance on page 6-4should be performed when indicated. SeeAdditional
Required Services on page 6-6andMaintenance
Footnotes on page 6-7for further information.
{CAUTION:
Performing maintenance work on a vehicle can
be dangerous. In trying to do some jobs, you
can be seriously injured. Do your own
maintenance work only if you have the
required know-how and the proper tools and
equipment for the job. If you have any doubt,
see your GM Goodwrench dealer to have a
quali®ed technician do the work.Some maintenance services can be complex. So,
unless you are technically quali®ed and have the
necessary equipment, you should have your
GM Goodwrench dealer do these jobs.
When you go to your GM Goodwrench dealer for your
service needs, you will know that GM-trained and
supported service technicians will perform the work
using genuine GM parts.
If you want to get service information, see
Service
Publications Ordering Information on page 7-11.
Owner Checks and Services on page 6-8tells you what
should be checked, when to check it and what you
can easily do to help keep your vehicle in good
condition.
The proper replacement parts, ¯uids and lubricants to
use are listed in
Recommended Fluids and Lubricants
on page 6-11andNormal Maintenance Replacement
Parts on page 6-13. When your vehicle is serviced,
make sure these are used. All parts should be replaced
and all necessary repairs done before you or anyone
else drives the vehicle. We recommend the use of
genuine GM parts.
6-3

Erasing HomeLinkžButtons..............................2-40
Event Data Recorders (EDR)............................. 7-8
Exit Lights.....................................................3-67
Exit/Entry Lighting...........................................3-26
Express-Down Window....................................2-16
Express-Up Window........................................2-16
Extender, Safety Belt.......................................1-17
Exterior Lamps...............................................3-22
Exterior Lighting Battery Saver..........................3-25
F
Feature Programming......................................3-66
Filter
Engine Air Cleaner......................................5-18
Finish Care....................................................5-79
Finish Damage...............................................5-80
Flash at Lock.................................................3-68
Flash at Unlock..............................................3-68
Flash-to-Pass................................................... 3-7
Flat Tire........................................................5-73
Floor Mats.....................................................2-42
Fluid
Automatic Transmission................................5-19
Power Steering...........................................5-32
Windshield Washer......................................5-33
FM Stereo.....................................................3-72FOB Reminder...............................................3-68
Fog Lamp Light..............................................3-53
Fog Lamps....................................................3-24
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-54
Gasoline Octane........................................... 5-5
Gasoline Speci®cations.................................. 5-5
Fuses
Fuses and Circuit Breakers...........................5-85
Windshield Wiper.........................................5-84
G
Gage
Engine Coolant Temperature.........................3-47
Engine Oil Pressure.....................................3-52
Fuel..........................................................3-54
Speedometer..............................................3-41
Tachometer.................................................3-41
Voltmeter Gage...........................................3-44
Garage Door Opener.......................................2-37
5

Gasoline
Octane........................................................ 5-5
Speci®cations............................................... 5-5
Gate Operator and Canadian Programming........2-39
Glove Box.....................................................2-41
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-4
Headlamp
Aiming.......................................................5-46
Vertical Aiming............................................5-47
Headlamp High/Low-Beam Changer.................... 3-6
Headlamps
Bulb Replacement.......................................5-49
Headlamps on Reminder................................... 3-6
Head-Up Display (HUD)...................................3-27
Heated Seats................................................... 1-3
Highway Hypnosis...........................................4-26
Hill and Mountain Roads..................................4-26
HomeLink
žTransmitter....................................2-37
HomeLinkžTransmitter, Programming................2-37
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-5How the System Works...................................3-31
How to Add Coolant to the Coolant
Surge Tank.................................................5-28
How to Check........................................5-19, 5-58
How to Check Lubricant...................................5-45
How to Check Power Steering Fluid..................5-33
How to Remove and Replace the Floor Mats......2-42
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly..................... 1-9
Hydroplaning..................................................4-21
I
If No Steam Is Coming From Your Engine..........5-25
If Steam Is Coming From Your Engine...............5-24
If the Light Is Flashing.....................................3-49
If the Light Is On Steady.................................3-50
If You Are Caught in a Blizzard.........................4-30
If You Are Stuck in Sand, Mud, Ice or Snow.......4-31
Ignition Positions.............................................2-19
Infants and Young Children, Restraints...............1-20
In¯ation - Tire Pressure...................................5-57
Instrument Panel
Cluster.......................................................3-40
Overview..................................................... 3-2
Instrument Panel Brightness.............................3-25
Instrument Panel Fuse Block............................5-85
Interior Lamps................................................3-25
6