check engine CADILLAC XLR 2009 1.G Service Manual

Maintenance Schedule
Introduction
Important: Keep engine oil at the proper level and
change as recommended.
Have you purchased the GM Protection Plan? The Plan
supplements the vehicle warranties. See the Warranty
and Owner Assistance booklet or your dealer/retailer for
details.
Maintenance Requirements
Notice:Maintenance intervals, checks, inspections,
replacement parts, and recommended uids and
lubricants as prescribed in this manual are
necessary to keep this vehicle in good working
condition. Any damage caused by failure to follow
scheduled maintenance might not be covered by the
vehicle warranty.
Your Vehicle and the Environment
Proper vehicle maintenance not only helps to keep the
vehicle in good working condition, but also helps the
environment. All recommended maintenance is
important. Improper vehicle maintenance can even affect
the quality of the air we breathe. Improper uid levels or
the wrong tire ination can increase the level of emissions
from the vehicle. To help protect the environment, and to
keep the vehicle in good condition, be sure to maintain
the vehicle properly.
7-2

The proper replacement parts, uids, and lubricants to
use are listed inRecommended Fluids and Lubricants
on page 7-11andMaintenance Replacement Parts
on page 7-13. When the 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
parts from your dealer/retailer.
Scheduled Maintenance
To maintain the ride, handling, and performance of this
vehicle, it is important that the rst tire rotation service be
performed when you notice unusual wear. Check tires for
ination pressures and wear. SeeTires on page 6-46.
If tire rotation is recommended for the vehicle, rotate tires.
SeeTire Inspection and Rotation on page 6-60.When the CHANGE OIL NOW message displays in the
Driver Information Center (DIC), service is required for
the vehicle. Have the vehicle serviced as soon as
possible within the next 600 miles (1 000 km). It is
possible that, if driving under the best conditions, the
engine oil life system may not indicate that vehicle
service is necessary for over a year. However, the engine
oil and lter must be changed at least once a year and at
this time the system must be reset. Your dealer/retailer
has trained service technicians who will perform this work
using genuine parts and reset the system.
If the engine oil life system is ever reset accidentally,
service the vehicle within 3,000 miles (5 000 km)
since the last service. Remember to reset the oil life
system whenever the oil is changed. SeeEngine Oil Life
System on page 6-18for information on the Engine
Oil Life System and resetting the system.
7-4

When the CHANGE OIL NOW message appears, the
following services, checks, and inspections are required:
❑Change engine oil and lter. SeeEngine Oil on
page 6-15. Reset oil life system. SeeEngine Oil Life
System on page 6-18.An Emission Control Service.
❑Visually check for any leaks or damage.
See footnote (a).
❑Inspect engine air cleaner lter. If necessary, replace
lter. SeeEngine Air Cleaner/Filter on page 6-20.
See footnote (h).
❑Check tires for ination pressures and wear. SeeTires
on page 6-46. If tire rotation is recommended for the
vehicle, rotate tires. SeeTire Inspection and Rotation
on page 6-60.
❑Inspect brake system.See footnote (l).❑Check engine coolant and windshield washer uid
levels. If the vehicle has the 4.4L V8 supercharged
engine, check intercooler uid level. Add uid as
needed.
❑Perform any needed additional services. See
“Additional Required Services” in this section.
❑Inspect suspension and steering components.
See footnote (n).
❑Inspect engine cooling system.See footnote (m).
❑Inspect wiper blades.See footnote (b).
❑Inspect restraint system components.
See footnote (c).
❑Lubricate body components.See footnote (d).
7-5

Additional Required Services (cont’d)
Service and Miles (Kilometers)25,000
(40 000)50,000
(80 000)75,000
(120 000)100,000
(160 000)125,000
(200 000)150,000
(240 000)
Engine cooling system service (or every
ve years, whichever occurs rst).
An Emission Control Service.
See footnote (g).•
4.4L Supercharged Engine: Intercooler
system service (or every ve years,
whichever occurs rst).See footnote (k).•
Inspect engine accessory drive belt.
An Emission Control Service.
See footnote (j).•
Maintenance Footnotes
(a)A fluid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired
and the fluid level checked. Add fluid if needed.
(b)Inspect wiper blades for wear, cracking, or
contamination. Clean the windshield and wiper blades, if
contaminated. Replace wiper blades that are worn or
damaged. See Windshield Wiper Blade Replacement
on page 6-45 and Windshield and Wiper Blades
on page 6-78 for more information.(c)Make sure the safety belt reminder light and safety
belt assemblies 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 see Checking the Restraint
Systems on page 1-52.
7-7

Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure vehicle safety,
dependability, and emission control performance. Your
dealer/retailer can assist with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to the
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 7-11.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel fill.
Engine Oil Level Check
Notice:It is important to check the engine oil
regularly and keep it at the proper level. Failure to
keep the engine oil at the proper level can cause
damage to the engine not covered by the vehicle
warranty.
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 6-15.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOL®
coolant mixture if necessary. SeeEngine Coolant
on page 6-23.
Intercooler Coolant Level Check
(4.4L Supercharged Engine)
Check the coolant level and add DEX-COOL®coolant
mixture if necessary. SeeEngine Coolant on page 6-23.
Windshield Washer Fluid Level
Check
Check the windshield washer uid level in the windshield
washer uid reservoir and add the proper uid if
necessary. SeeWindshield Washer Fluid on page 6-31.
At Least Once a Month
Tire Inspection and Ination Check
Inspect the vehicle’s tires for wear and make sure they
are inated to the correct pressures. SeeInflation - Tire
Pressure on page 6-54.
7-9

At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the vehicle
could move suddenly. If the vehicle moves, you or
others could be injured.
1. Before starting this check, be sure there is enough
room around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-32.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The vehicle
should start only in P (Park) or N (Neutral). If the
vehicle starts in any other position, contact
your dealer/retailer for service.
Automatic Transmission Shift Lock
Control System Check
{CAUTION:
When you are doing this inspection, the vehicle
could move suddenly. If the vehicle moves, you or
others could be injured.
1. Before starting this check, be sure there is enough
room around the vehicle. It should be parked on a
level surface.
2. Firmly apply the parking brake. SeeParking Brake
on page 2-32.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off and without applying the regular
brake, try to move the shift lever out of P (Park)
with normal effort. If the shift lever moves out
of P (Park), contact your dealer/retailer for service.
7-10

Parking Brake and Automatic
Transmission P (Park) Mechanism
Check
{CAUTION:
When you are doing this check, the vehicle could
begin to move. You or others could be injured and
property could be damaged. Make sure there is
room in front of the vehicle in case it begins to roll.
Be ready to apply the regular brake at once
should the vehicle begin to move.
Park on a fairly steep hill, with the vehicle facing downhill.
Keeping your foot on the regular brake, set the parking
brake.
To check the parking brake’s holding ability: With the
engine running and transmission in N (Neutral),
slowly remove foot pressure from the regular brake
pedal. Do this until the vehicle is held by the parking
brake only.
To check the P (Park) mechanism’s holding ability:
With the engine running, shift to P (Park). Then
release the parking brake followed by the regular
brake.
Contact your dealer/retailer if service is required.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
Recommended Fluids and
Lubricants
Fluids and lubricants identied below by name, part
number, or specication can be obtained from your
dealer/retailer.
Usage Fluid/Lubricant
Engine OilThe engine requires a special engine
oil meeting GM Standard GM4718M.
Oils meeting this standard can be
identied as synthetic, and should
also be identied with the American
Petroleum Institute (API) Certied for
Gasoline Engines starburst symbol.
However, not all synthetic API oils
with the starburst symbol will meet
this GM standard. Look for and use
only an oil that meets GM Standard
GM4718M. For the proper viscosity,
seeEngine Oil on page 6-15.
7-11

Current and Past Model Order Forms
Technical Service Bulletins and Manuals are available
for current and past model GM vehicles. To request
an order form, specify year and model name of
the vehicle.
ORDER TOLL FREE: 1-800-551-4123
Monday-Friday 8:00 AM - 6:00 PM
Eastern Time
For Credit Card Orders Only
(VISA-MasterCard-Discover), visit Helm, Inc. on the
World Wide Web at: helminc.com
Or you can write to:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
Prices are subject to change without notice and without
incurring obligation. Allow ample time for delivery.
Note to Canadian Customers: All listed prices are
quoted in U.S. funds. Canadian residents are to make
checks payable in U.S. funds.
Vehicle Data Recording and
Privacy
Your GM vehicle has a number of sophisticated
computers that record information about the vehicle’s
performance and how it is driven. For example, your
vehicle uses computer modules to monitor and control
engine and transmission performance, to monitor the
conditions for airbag deployment and deploy airbags in a
crash and, if so equipped, to provide antilock braking to
help the driver control the vehicle. These modules may
store data to help your dealer/retailer technician service
your vehicle. Some modules may also store data about
how you operate the vehicle, such as rate of fuel
consumption or average speed. These modules may also
retain the owner’s personal preferences, such as radio
pre-sets, seat positions, and temperature settings.
8-16

Check
Engine Lamp..............................................3-50
Checking Things Under the Hood......................6-10
Chemical Paint Spotting...................................6-81
Child Restraints
Child Restraint Systems...............................1-31
Infants and Young Children...........................1-27
Lower Anchors and Tethers for Children..........1-33
Older Children.............................................1-23
Securing a Child Restraint in the
Right Front Seat Position..........................1-34
Cigarette Lighter.............................................3-35
Cleaning
Aluminum or Chrome-Plated Wheels..............6-79
Exterior Lamps/Lenses.................................6-77
Fabric/Carpet..............................................6-75
Fiberglass Springs.......................................6-81
Finish Care.................................................6-78
Instrument Panel, Vinyl, and Other Plastic
Surfaces.................................................6-76
Interior.......................................................6-74
Leather......................................................6-75
Speaker Covers..........................................6-76
Tires..........................................................6-80
Underbody Maintenance...............................6-80Cleaning (cont.)
Washing Your Vehicle...................................6-77
Weatherstrips..............................................6-77
Windshield and Wiper Blades........................6-78
Wood Panels..............................................6-76
Climate Control System
Air Filter, Passenger Compartment.................3-41
Dual ..........................................................3-36
Outlet Adjustment........................................3-40
Collision Damage Repair..................................8-11
Competitive Driving, Racing or Other.................5-14
Control of a Vehicle.......................................... 5-3
Convenience Net............................................2-54
Coolant
Engine.......................................................
6-23
Engine Temperature Gage............................3-49
Cooled Seats................................................... 1-3
Cooling System..............................................6-22
Courtesy Lamps.............................................3-30
Cruise Control................................................3-11
Cupholders....................................................2-53
Customer Assistance Information
Courtesy Transportation................................8-10
Customer Assistance for Text
Telephone (TTY) Users............................... 8-6
Customer Assistance Offices........................... 8-6
3

Engine
Air Cleaner/Filter.........................................6-20
Check and Service Engine Soon Lamp...........3-50
Coolant......................................................6-23
Coolant Temperature Gage...........................3-49
Drive Belt Routing.......................................7-14
Engine Compartment Overview......................6-12
Exhaust.....................................................2-36
Oil .............................................................6-15
Oil Life System...........................................6-18
Oil Pressure Gage.......................................3-54
Overheated Protection Operating Mode...........6-29
Overheating................................................6-27
Starting......................................................2-26
Enter Destination............................................4-27
Entry/Exit Lighting...........................................3-30
Event Data Recorders.....................................8-17
Extender, Safety Belt.......................................1-23
Exterior Lamps...............................................3-26
Exterior Lighting Battery Saver..........................3-30
F
Filter
Engine Air Cleaner......................................6-20
Finish Damage...............................................6-80
Flashers, Hazard Warning.................................. 3-6Flash-to-Pass................................................... 3-8
Flat Tire........................................................6-72
Floor Mats.....................................................2-53
Fluid
Automatic Transmission................................6-21
Power Steering...........................................6-30
Windshield Washer......................................6-31
Fog Lamp
Fog ...........................................................3-28
Fog Lamp Light..............................................3-55
Fuel............................................................... 6-5
Additives...................................................... 6-6
California Fuel.............................................. 6-6
Filling a Portable Fuel Container....................6-10
Filling the Tank............................................. 6-8
Fuels in Foreign Countries.............................. 6-7
Gage .........................................................3-56
Gasoline Octane........................................... 6-5
Gasoline Specications.................................. 6-6
Fuses
Fuses and Circuit Breakers...........................6-83
Instrument Panel Fuse Block.........................6-83
Underhood Fuse Block.................................6-87
Windshield Wiper.........................................6-83
5