fuel CADILLAC DTS 2009 1.G Service Manual

Fuses Usage
42 OnStar®Module
43 Body Modules
44 Radio
45 Door Unlatch (optional)
46 Rear Defogger (J-Case)
47Electronic Leveling Control
Compressor (J-Case)
48 Blower (J-Case) (optional)
49 Blower (J-Case) (optional)
Resistor Usage
50 Terminating Resistor
Relays Usage
51 Front Blower (optional)
52 Rear Defogger
53Electronic Leveling Control
Compressor
58 Park Lamps
Relays Usage
59 Fuel Pump
60 License Plate Lamp (optional)
61 Right Park Lamp (optional)
62 Unlock
63 Lock
64 Run
65 Not Used
66 Door Unlatch (optional)
67 Trunk Release
68 Stoplamp (optional)
69 Overhead Lamps (optional)
70 Retained Accessory Power (RAP)
Circuit
BreakersUsage
54 Right Front Seat
55 Left Front Power Seat
56 Power Windows
57 Power Tilt Steering Wheel
5-102

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended Fluids and
Lubricants on page 6-11for more information.
ApplicationCapacities
English Metric
Air Conditioning RefrigerantFor the air conditioning system refrigerant charge
amount, see the refrigerant caution label located
under the hood. See your dealer/retailer for more
information.
Cooling System 12.6 qt 12.0 L
Engine Oil with Filter 7.5 qt 7.1 L
Fuel Tank 18.5 gal 70.0 L
Transmission 7.4 qt 7.0 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 Transmission Spark Plug Gap
4.6L DOHC V8 Engine Y Automatic 0.050 in (1.27 mm)
4.6L DOHC V8 Engine 9 Automatic 0.050 in (1.27 mm)
5-103

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

Additional Required Services
The following services should be performed at the rst maintenance service 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.
SeeEngine Air Cleaner/Filter on
page 5-17.•••
Replace passenger compartment
air lter.See footnote (g).• •••••
Change automatic transmission
uid and lter (severe service).
See footnote (h).•••
Change automatic transmission uid
and lter (normal service).•
6-5

(j)Drain, flush, and refill cooling system. This service
can be complex; you should have your dealer/retailer
perform this service. See Engine Coolant on page 5-23
for what to use. Inspect hoses. Clean radiator,
condenser, pressure cap, and filler neck. Pressure test
the cooling system and pressure cap.
(k)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.
(l)Visually inspect belt for fraying, excessive cracks, or
obvious damage. Replace belt if necessary.
(m)If driving regularly under dusty conditions, inspect
the filter at each engine oil change.
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 6-11.
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 5-13.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOL®
coolant mixture if necessary. SeeEngine Coolant
on page 5-23.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer uid reservoir and add the proper uid if
necessary.
6-8

Coverage
Services are provided up to 5 years/100,000 miles
(160 000 km), whichever comes rst.
In the U.S., anyone driving the vehicle is covered. In
Canada, a person driving the vehicle without permission
from the owner is not covered.
Roadside Assistance is not a part of the New Vehicle
Limited Warranty. Cadillac and General Motors of
Canada Limited reserve the right to make any changes
or discontinue the Roadside Assistance program at
any time without notication.
Cadillac and General Motors of Canada Limited reserve
the right to limit services or payment to an owner or
driver if they decide the claims are made too often, or
the same type of claim is made many times.
Cadillac Owner Privileges™
Emergency Fuel Delivery:Delivery of enough fuel
for the vehicle to get to the nearest service station.
Lock-Out Service:Service is provided to unlock the
vehicle if you are locked out. A remote unlock may
be available if you have OnStar
®. For security
reasons, the driver must present identication
before this service is given.
Emergency Tow From a Public Road or
Highway:Tow to the nearest Cadillac dealer for
warranty service, or if the vehicle was in a crash and
cannot be driven. Assistance is also given when
the vehicle is stuck in the sand, mud, or snow.
Flat Tire Change:Service is provided to change a
at tire with spare tire. The spare tire, if equipped,
must be in good condition and properly inated.
It is your responsibility for the repair or replacement
of the tire if it is not covered by the warranty.
Battery Jump Start:Service is provided to jump
start a dead battery.
Trip Routing Service:Detailed maps of North
America are provided when requested either
with the most direct route or the most scenic route.
Additional travel information is also available.
Allow three weeks for delivery.
Trip Interruption Benets and Assistance:
If your trip is interrupted due to a warranty failure,
incidental expenses may be reimbursed during
the 5 year/100,000 miles (160 000 km) Powertrain
warranty period. Items considered are hotel,
meals, and rental car.
7-8

Cadillac Technician Roadside Service
(U.S. only)
Cadillac’s exceptional Roadside Service is more than an
auto club or towing service. It provides every Cadillac
owner in the United States with the advantage of
contacting a Cadillac advisor and, where available, a
Cadillac trained dealer technician who can provide
on-site service.
A dealer technician will travel to your location within a
30 mile radius of a participating Cadillac dealership.
If beyond this radius, we will arrange to have your
car towed to the nearest Cadillac dealership. Each
technician travels with a specially equipped service
vehicle complete with the necessary Cadillac parts and
tools required to handle most roadside repairs.
Services Not Included in Roadside
Assistance
Impound towing caused by violation of any laws.
Legal nes.
Mounting, dismounting or changing of snow tires,
chains, or other traction devices.
Towing or services for vehicles driven on a
non-public road or highway.
Services Specic to Canadian
Purchased Vehicles
Fuel delivery:Reimbursement is approximately
$5 Canadian. Diesel fuel delivery may be restricted.
Propane and other fuels are not provided through
this service.
Lock-Out Service:Vehicle registration is required.
Trip Routing Service:Limit of six requests per year.
Trip Interruption Benets and Assistance:
Pre-authorization, original detailed receipts, and a
copy of the repair orders are required. Once
authorization has been received, the Roadside
Assistance advisor will help you make arrangements
and explain how to receive payment.
Alternative Service:If assistance cannot be
provided right away, the Roadside Assistance
advisor may give you permission to get local
emergency road service. You will receive payment,
up to $100, after sending the original receipt to
Roadside Assistance. Mechanical failures may be
covered, however any cost for parts and labor for
repairs not covered by the warranty are the owner
responsibility.
7-9

Public Transportation or Fuel
Reimbursement
If your vehicle requires warranty repairs, and public
transportation is used instead of the dealer’s shuttle
service, the expense must be supported by original
receipts and can only be up to the maximum amount
allowed by GM for shuttle service. In addition, for
U.S. customers, should you arrange transportation
through a friend or relative, limited reimbursement for
reasonable fuel expenses may be available. Claim
amounts should reect actual costs and be supported
by original receipts. See your dealer for information
regarding the allowance amounts for reimbursement of
fuel or other transportation costs.
Courtesy Rental Vehicle
Your dealer may arrange to provide you with a courtesy
rental vehicle or reimburse you for a rental vehicle
that you obtain if your vehicle is kept for a warranty
repair. If you obtain a rental vehicle on your own, please
see your dealer for the maximum number of days
allowed and the allowance per rental day. Rental
reimbursement must be supported by original receipts.This requires that you sign and complete a rental
agreement and meet state, local, and rental vehicle
provider requirements. Requirements vary and may
include minimum age requirements, insurance coverage,
credit card, etc. You are responsible for fuel usage
charges and may also be responsible for taxes, levies,
usage fees, excessive mileage, or rental usage beyond
the completion of the repair.
It may not be possible to provide a like-vehicle as a
courtesy rental.
Additional Program Information
All program options, such as shuttle service, may not be
available at every dealer. Please contact your dealer
for specic information about availability. All Courtesy
Transportation arrangements will be administered
by appropriate dealer personnel.
General Motors reserves the right to unilaterally modify,
change, or discontinue Courtesy Transportation at
any time and to resolve all questions of claim eligibility
pursuant to the terms and conditions described
herein at its sole discretion.
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.
7-17