2009 CADILLAC DTS service schedule

Seats and Restraint System............................. 1-1
Head Restraints
......................................... 1-2
Front Seats
............................................... 1-3
Rear Seats
..............................................1-10
Safety Belts
.............................................1-12
Child Restraints
.......................................1-33
Airbag System
.........................................1-55
Restraint System Check
............................1-70
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
......................................2-10
Windows
.................................................2-15
Theft-Deterrent Systems
............................2-20
Starting and Operating Your Vehicle
...........2-24
Mirrors
....................................................2-38
Object Detection Systems
..........................2-42
OnStar
®System
......................................2-51
Universal Home Remote System
................2-55
Storage Areas
.........................................2-62
Sunroof
..................................................2-64
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-40
Warning Lights, Gages, and Indicators
........3-50Driver Information Center (DIC)
..................3-67
Audio System(s)
.......................................3-95
Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and the Vehicle
....... 4-2
Towing
...................................................4-26
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
...............5-10
Headlamp Aiming
.....................................5-43
Bulb Replacement
....................................5-46
Windshield Wiper Blade Replacement
.........5-46
Tires
......................................................5-48
Appearance Care
.....................................5-86
Vehicle Identication
.................................5-94
Electrical System
......................................5-94
Capacities and Specications
...................5-103
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-15
Vehicle Data Recording and Privacy
...........7-17
Index................................................................ 1
2009 Cadillac DTS Owner ManualM

Restraint System Check
Checking the Restraint Systems
Safety Belts
Now and then, check that the safety belt reminder light,
safety belts, buckles, latch plates, retractors, and
anchorages are all working properly.
Look for any other loose or damaged safety belt system
parts that might keep a safety belt system from doing
its job. See your dealer/retailer to have it repaired. Torn
or frayed safety belts may not protect you in a crash.
They can rip apart under impact forces. If a belt is torn
or frayed, get a new one right away.
Make sure the safety belt reminder light is working.
SeeSafety Belt Reminders on page 3-53for more
information.
Keep safety belts clean and dry. SeeCare of Safety
Belts on page 5-89.
Airbags
The airbag system does not need regularly scheduled
maintenance or replacement. Make sure the airbag
readiness light is working. SeeAirbag Readiness Light
on page 3-54for more information.
Notice:If an airbag covering is damaged, opened,
or broken, the airbag may not work properly. Do
not open or break the airbag coverings. If there are
any opened or broken airbag covers, have the
airbag covering and/or airbag module replaced.
For the location of the airbag modules, seeWhat
Makes an Airbag Inflate? on page 1-61. See your
dealer/retailer for service.
1-70

Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have or
might begin programs to inspect the emission control
equipment on the vehicle. Failure to pass this inspection
could prevent getting a vehicle registration.
Here are some things to know to help the vehicle pass
an inspection:
The vehicle will not pass this inspection if the check
engine light is on with the engine running, or if the
key is in ON/RUN and the light is not on.
The vehicle will not pass this inspection if the
OBD II (on-board diagnostic) system determines
that critical emission control systems have not been
completely diagnosed by the system. The vehicle
would be considered not ready for inspection.
This can happen if the battery has recently
been replaced or if the battery has run down.
The diagnostic system is designed to evaluate
critical emission control systems during normal
driving. This can take several days of routine driving.
If this has been done and the vehicle still does
not pass the inspection for lack of OBD II system
readiness, your dealer/retailer can prepare the
vehicle for inspection.
Oil Pressure Light
{CAUTION:
Do not keep driving if the oil pressure is low.
The engine can become so hot that it catches re.
Someone could be burned. Check the oil as soon
as possible and have the vehicle serviced.
Notice:Lack of proper engine oil maintenance
can damage the engine. The repairs would not be
covered by the vehicle warranty. Always follow
the maintenance schedule in this manual for
changing engine oil.
3-64

DIC Warnings and Messages
These messages appear if there is a problem detected
in one of your vehicle’s systems.
You must acknowledge a message to clear it from the
screen for further use. To clear a message, press
the set/reset button.
Be sure to take any message that appears on the
screen seriously and remember that clearing the
message will only make the message disappear,
not the problem.
ADVISORY XXX MPH (km/h)
This message displays when the Speed Alert has been
turned on through the DIC Information Menu and the
vehicle is at or above the advised speed. SeeDIC
Operation and Displays on page 3-68.
AUTOMATIC LIGHT CONTROL OFF
This message displays when the automatic headlamps
are turned off. SeeExterior Lamps on page 3-29for
more information.
AUTOMATIC LIGHT CONTROL ON
This message displays when the automatic headlamps
are turned on. SeeExterior Lamps on page 3-29for
more information.
BATTERY SAVER ACTIVE
This message displays when the system detects that
the battery voltage is dropping beyond a reasonable
level. The battery saver system starts reducing certain
features of the vehicle that you may be able to notice.
At the point that the features are disabled, this message
is displayed. It means that the vehicle is trying to save the
charge in the battery.
Turn off all unnecessary accessories to allow the battery
to recharge.
The normal battery voltage range is 11.5 to 15.5 volts.
You can monitor battery voltage on the Driver Information
Center (DIC) by pressing the trip/fuel button until
BATTERY VOLTAGE is displayed.
CHANGE ENGINE OIL SOON
This message displays when service is required for
your vehicle. See your dealer/retailer. SeeEngine Oil
on page 5-13andScheduled Maintenance on page 6-4
for more information.
When you reset the CHANGE ENGINE OIL SOON
message by clearing it from the display, you still must
reset the engine oil life system separately. For more
information on resetting the engine oil life system,
seeEngine Oil Life System on page 5-16.
3-73

Leaving After Parking on a Hill
1. Apply and hold the brake pedal while you:
start the engine,
shift into a gear, and
release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the
chocks.
Maintenance When Trailer Towing
The vehicle needs service more often when pulling a
trailer. SeeScheduled Maintenance on page 6-4
for more information. Things that are especially
important in trailer operation are automatic transmission
uid, engine oil, belts, cooling system and brake
system. It is a good idea to inspect these before and
during the trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Engine Cooling When Trailer Towing
The cooling system may temporarily overheat during
severe operating conditions. SeeEngine Overheating on
page 5-28.
Changing a Tire When Trailer Towing
If the vehicle gets a at tire while towing a trailer,
be sure to secure the trailer and disconnect it from the
vehicle before changing the tire.
4-34

Bulb Replacement
It is recommended that all bulbs be replaced by your
dealer/retailer.
High Intensity Discharge (HID)
Lighting
{CAUTION:
The low beam high intensity discharge lighting
system operates at a very high voltage. If you try to
service any of the system components, you could
be seriously injured. Have your dealer/retailer or a
qualied technician service them.
The vehicle may have HID headlamps. After an HID
headlamp bulb has been replaced, you may notice that
the beam is a slightly different shade than it was
originally. This is normal.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for wear
or cracking. SeeScheduled Maintenance on page 6-4
for more information on wiper blade inspection.
Replacement blades come in different types and are
removed in different ways. Here is how to remove
the wiper blade:
1. Turn the engine off.
2. Lift the windshield wiper arm and blade away from
the windshield.
3. Pull the clip up from the blade connecting point and
pull the blade assembly down toward the windshield
to remove it from the wiper arm.
4. Install the new wiper blade onto the wiper arm and
rmly press down on the clip to snap it into place.
5-46

Maintenance Schedule......................................6-2
Introduction...................................................6-2
Maintenance Requirements..............................6-2
Your Vehicle and the Environment....................6-2
Using the Maintenance Schedule......................6-2
Scheduled Maintenance...................................6-4
Additional Required Services............................6-5
Maintenance Footnotes...................................6-7Owner Checks and Services............................6-8
At Each Fuel Fill............................................6-8
At Least Once a Month...................................6-9
At Least Once a Year.....................................6-9
Recommended Fluids and Lubricants...............6-11
Maintenance Replacement Parts.....................6-13
Engine Drive Belt Routing..............................6-14
Maintenance Record.....................................6-15
Section 6 Maintenance Schedule
6-1

This schedule is for vehicles that:
carry passengers and cargo within recommended
limits on the Tire and Loading Information label.
SeeLoading the Vehicle on page 4-19.
are driven on reasonable road surfaces within legal
driving limits.
use the recommended fuel. SeeGasoline Octane
on page 5-5.
The services inScheduled Maintenance on page 6-4
should be performed when indicated. SeeAdditional
Required Services on page 6-5andMaintenance
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 dealer/retailer to have a
qualied technician do the work. SeeDoing Your
Own Service Work on page 5-4.Some maintenance services can be complex.
So, unless you are technically qualied and have
the necessary equipment, have your dealer/retailer
do these jobs.
When you go to your dealer/retailer for service, trained
and supported service technicians will perform the
work using genuine parts.
To purchase service information, seeService
Publications Ordering Information on page 7-16.
Owner Checks and Services on page 6-8tells what
should be checked, when to check it, and what
can easily be done to help keep the vehicle in good
condition.
The proper replacement parts, uids, and lubricants to
use are listed inRecommended Fluids and Lubricants
on page 6-11andMaintenance Replacement Parts
on page 6-13. 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.
6-3