fuel CADILLAC DTS 2006 1.G Owner's Guide

Each tire, including the spare (if provided), should be
checked monthly when cold and inated to the ination
pressure recommended by the vehicle manufacturer
on the vehicle placard or tire ination pressure label.
(If your vehicle has tires of a different size than the size
indicated on the vehicle placard or tire ination
pressure label, you should determine the proper
tire ination pressure for those tires.)
As an added safety
feature, your vehicle has
been equipped with a
tire pressure monitoring
system (TPMS) that
illuminates a low tire
pressure telltale when one
or more of your tires is
signicantly under-inated.
Accordingly, when the low tire pressure telltale
illuminates, you should stop and check your tires as
soon as possible, and inate them to the proper
pressure. 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.Please note that the TPMS is not a substitute for proper
tire maintenance, and it is the driver’s responsibility to
maintain correct tire pressure, even if under-ination has
not reached the level to trigger illumination of the
TPMS low tire pressure telltale.
The CHECK TIRE PRESSURE warning message and
low tire pressure light (telltale) will appear at each
ignition cycle until the tires are inated to the correct
ination pressure.
The Tire and Loading Information Label shows the size
of your vehicle’s original tires and their recommended
cold ination pressures. SeeLoading Your Vehicle
on page 4-31, for the location of the tire and loading
information label. Also seeInation - Tire Pressure
on page 5-56.
Your vehicle’s TPMS can alert you about a low tire
pressure condition but it does not replace normal tire
maintenance. SeeTire Inspection and Rotation on
page 5-63andTires on page 5-49.
Notice:Do not use a tire sealant if your vehicle has
Tire Pressure Monitors. The liquid sealant can
damage the tire pressure monitor sensors.
5-60

Sheet Metal Damage
If the vehicle is damaged and requires sheet metal
repair or replacement, make sure the body repair shop
applies anti-corrosion material to parts repaired or
replaced to restore corrosion protection.
Original manufacturer replacement parts will provide the
corrosion protection while maintaining the warranty.
Finish Damage
Any stone chips, fractures or deep scratches in the
nish should be repaired right away. Bare metal
will corrode quickly and may develop into major repair
expense.
Minor chips and scratches can be repaired with
touch-up materials available from your GM dealer.
Larger areas of nish damage can be corrected in your
GM dealer’s body and paint shop.
Underbody Maintenance
Chemicals used for ice and snow removal and dust
control can collect on the underbody. If these are not
removed, corrosion and rust can develop on the
underbody parts such as fuel lines, frame, oor pan,
and exhaust system even though they have corrosion
protection.
At least every spring, ush these materials from the
underbody with plain water. Clean any areas where mud
and debris can collect. Dirt packed in close areas of
the frame should be loosened before being ushed.
Your dealer or an underbody car washing system can
do this for you.
Chemical Paint Spotting
Some weather and atmospheric conditions can create a
chemical fallout. Airborne pollutants can fall upon and
attack painted surfaces on the vehicle. This damage can
take two forms: blotchy, ring-shaped discolorations,
and small, irregular dark spots etched into the
paint surface.
Although no defect in the paint job causes this, GM will
repair, at no charge to the owner, the surfaces of
new vehicles damaged by this fallout condition within
12 months or 12,000 miles (20 000 km) of purchase,
whichever occurs rst.
5-89

Fuses Usage
F9 Door Unlatch (Option)
F10 Switch Dimmer
F11 Fuel Pump
F12 Body Control Module Logic
F13 Airbag
F14 Auxiliary Power Outlets
F15 Driver’s Side Turn Signal
F16 Passenger Side Rear Turn Signal
F17 Not Used
F18Center High-Mounted Stoplamp,
Back-up Lamps
F19 Rear Door Locks
F20 Stoplamp (Option)
F21 Radio
F22 OnStar
®(Option)
F23Auxiliary Power Outlet, Cigarette
Lighter, Console
F24 Driver Door Module
F25 Passenger Door Module
F26 Trunk Release (Option)
F27 Heated/Cooled Seats (Option)
F28Engine Control Module,
Transmission Control Module
(ECM/TCM)
Fuses Usage
F29 Regulated Voltage Control Sense
F30 Not Used
F31 Instrument Panel Harness Module
F32 Rear Heated Seats (Option)
F33 Not Used
F34 Steering Wheel Illumination
F35 Body Harness Module
F36Memory Seat Module Logic, Right
Front Massage (Option)
F37 Object Detection Sensor
F38 Sunroof
F40 Shifter Solenoid (Option)
F41Retained Accessory Power,
Miscellaneous
F42 Driver’s Side Park Lamp
F43 Passenger’s Side Park Lamp
F44 Heated Steering Wheel (Option)
F45 Rear Climate Control
F46 Not Used
F47Heated/Cooled Seats, Ignition 3
(Option)
F48 Ignition Switch
F49 Not Used
5-99

Circuit
BreakersUsage
CB1Front Passenger’s Seat, Memory
Seat Module
CB2Driver’s Power Seat, Memory Seat
Module
CB3 Door Module, Power Windows
CB4Memory Seat Module, Tilt/
Telescoping Steering Wheel (Option)
Resistor Usage
F39 Terminating Resistor
Relays Usage
R1 Retained Accessory Power
R2 Park Lamps
Relays Usage
R3 Run (Option)
R4 Park Lamps (Option)
R5Front Heating, Ventilation, Air
Conditioning Fan
R6 Trunk Release
R7 Fuel Pump
R8Door Unlatch, License Plate
Lamp (Option)
R9 Door Lock
R10 Door Unlock
R11 Overhead Lamps (Option)
R12 Stoplamps (Option)
R13 Not Used
R14 Rear Defogger (Option)
R15Electronic Leveling Control
Compressor
5-100

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended Fluids and
Lubricants on page 6-12for more information.
ApplicationCapacities
English Metric
Air Conditioning Refrigerant 1.43 lbs 0.65 kg
Cooling System 12.9 qt 12.2 L
Engine Oil with Filter 7.5 qt 7.1 L
Fuel Tank 18.5 gal 70.0 L
Transaxle 15.0 qt 14.2 L
Wheel Nut Torque 100 lb ft 140Y
All capacities are approximate. When adding, be sure to ll to the approximate level as recommended in this
manual. Recheck uid level after lling.
Engine Specications
Engine VIN Code Transaxle Spark Plug Gap
4.6L DOHC V8 Y Automatic 0.050 inches (1.27 mm)
4.6L DOHC V8 9 Automatic 0.050 inches (1.27 mm)
5-101

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............................6-6
Maintenance Footnotes...................................6-7Owner Checks and Services............................6-9
At Each Fuel Fill............................................6-9
At Least Once a Month...................................6-9
At Least Once a Year...................................6-10
Recommended Fluids and Lubricants...............6-12
Normal Maintenance Replacement Parts..........6-13
Maintenance Record.....................................6-14
Section 6 Maintenance Schedule
6-1

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. SeeLoading Your
Vehicle on page 4-31.
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 6-6andMaintenance
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
qualied technician do the work.Some maintenance services can be complex.
So, unless you are technically qualied 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 purchase service information, seeService
Publications Ordering Information on page 7-14.
Owner Checks and Services on page 6-9tells 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 inRecommended Fluids and Lubricants
on page 6-12andNormal 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

Additional Required Services
The following services should be performed at the rst maintenance service (IorII) after the indicated miles (kilometers)
shown for each item.
Additional Required Services
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)
Inspect fuel system for damage
or leaks.• •••••
Inspect exhaust system for loose or
damaged components.• •••••
Replace engine air cleaner lter. See
Engine Air Cleaner/Filter on page 5-18.•••
Throttle body service.An Emission
Control Service. See footnotes † and (l).• •••••
Change automatic transaxle uid and
lter (severe service).See footnote (h).•••
Change automatic transaxle uid and
lter (normal service).•
Replace spark plugs.An Emission
Control Service.•
Except Professional Vehicle: Engine
cooling system service (or every
ve years, whichever occurs rst).
An Emission Control Service. See
footnote (j).•
6-6

Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability, and emission control performance of your
vehicle. Your GM Goodwrench
®dealer can assist you
with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-12.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil
if necessary. SeeEngine Oil on page 5-13for
further details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. See
Engine Coolant on page 5-22for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the
windshield washer uid reservoir and add the proper
uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make sure they
are inated to the correct pressures. Do not forget to
check the spare tire. SeeTires on page 5-49for further
details. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire on page 5-72.
Tire Wear Inspection
Tire rotation may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notication. Check the tires for wear and, if necessary,
rotate the tires. SeeTire Inspection and Rotation on
page 5-63.
6-9

Roadside Service
Cadillac’s exceptional Roadside Service is more than an
auto club or towing service. It provides every Cadillac
owner with the advantage of contacting a Cadillac
advisor and, where available, a Cadillac trained dealer
technician who can provide on-site service.
Each technician travels with a specially equipped
service vehicle complete with the necessary Cadillac
parts and tools required to handle most roadside repairs.
Cadillac Roadside Service
®can be reached by dialing
1-800-882-1112, 24 hours a day, 365 days a year.
This service is provided at no charge for any situation
covered by the base warranty coverage and at a
nominal charge if the Cadillac is no longer covered by
the base warranty. Roadside Service is available only in
the United States and Canada.
Cadillac Owner Privileges™
Roadside Service provides several Cadillac Owner
Privileges™ at “no charge,” throughout yourCadillac
Warranty Period — 48 months/50,000 miles (80 000 km).
Emergency Road Service is performed on site for the
following situations:
Towing Service
Battery Jump Starting
Lock Out Assistance
Fuel Delivery
Flat Tire Change (Covers change only)
Trip Interruption — If your trip is interrupted due to
a warranty failure, incidental expenses may be
reimbursed during the 48 months/50,000 miles
(80 000 km) warranty period. Items covered
are hotel, meals, and rental car.
7-6