2007 CADILLAC STS engine

Passenger’s Side
Fuses Usage
SPARE Spare
CANISTER
VENTCanister Vent Solenoid
RT TURN-RIM Right Turn Signal
SUNROOF
(OPT)Sunroof Module (Option)
STOP LAMPS Stoplamps
FUEL PUMP Fuel Pump
RF HTD
ST/S-BANDFront Passenger Heated Seat,
S-Band™ Antenna
RADIO/
ONSTARRadio/OnStar
®
AIR BAG Airbags
Fuses Usage
RIM Battery to Rear Integration Module
RUN/CRANKIgnition 1, Fog Lamps, Compressor
Clutch, Engine Run/Crank Relays
HTD STG/CLMHeated Steering Wheel, Column
Lock Module
REAR DEFOG Rear Defogger
INTERIOR
LAMPInterior Lamps
PSG DR MOD Front Passenger Door Module
LT TURN-RIM Left Turn Signal
REAR FOG
LAMP (OPT)Rear Fog Lamps (Option)
496

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended
Fluids and Lubricants on page 516for more information.
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134aFor the air conditioning system refrigerant charge
amount, see the refrigerant caution label located
under the hood. See your dealer for more
information.
Cooling System
3.6L V6 11.7 qt 11.1 L
4.4L V8 (V-Series) 13.4 qt 12.7 L
4.6L V8 12.5 qt 11.8 L
Intercooler System 4.4L Engine 2.6 qt 2.5 L
Brake Fluid Capacities 1.1 qt 1.0 L
Engine Oil with Filter
3.6L V6 6.0 qt 5.7 L
4.4L V8 (V-Series) 9.0 qt 8.5 L
4.6L V8 8.0 qt 7.6 L
Fuel Tank 17.5 gal 66.2 L
498

ApplicationCapacities
English Metric
Transmission (Pan Removal and Filter Replacement)
5-Speed Automatic 7.4 qt 7.0 L
6-Speed Automatic 7.3 qt 6.9 L
6-Speed Automatic (V-Series) 6.5 qt 6.2 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 the uid level after lling.
Engine Specications
Engine VIN Code Transmission Spark Plug Gap
3.6L DOHC V6 7 Automatic 0.044 inches (1.11 mm)
4.4L DOHC V8 (V-Series) D Automatic 0.040 inches (1.02 mm)
4.6L DOHC V8 A Automatic 0.050 inches (1.27 mm)
STS-V Engine Data
Engine Horsepower Torque Displacement Compression Ratio
4.4L V8 (V-Series)469hp (350 kW)
@ 6400 rpm439 lb ft (595 Nm)
@ 3800 rpm4.4L 9.0:1
499

Maintenance Schedule................................ 502
Introduction............................................... 502
Maintenance Requirements........................ 502
Your Vehicle and the Environment............ 503
Using the Maintenance Schedule............... 503
Scheduled Maintenance............................. 505
Additional Required Services..................... 508
Maintenance Footnotes.............................. 510
Owner Checks and Services..................... 512At Each Fuel Fill....................................... 513
At Least Once a Month............................. 513
At Least Once a Year............................... 514
Recommended Fluids and Lubricants........ 516
Normal Maintenance
Replacement Parts ................................. 518
Engine Drive Belt Routing......................... 519
Maintenance Record.................................. 521
Section 6 Maintenance Schedule
501

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 your new vehicle warranties.
See your Warranty and Owner Assistance booklet
or your dealer 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 your vehicle in good working condition.
Any damage caused by failure to follow
scheduled maintenance might not be covered
by warranty.
502

If you want to purchase service information, see
Service Publications Ordering Information on
page 543.
Owner Checks and Services on page 512tells 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 516andNormal
Maintenance Replacement Parts on page 518.
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.Scheduled Maintenance
When the CHANGE ENGINE OIL SOON message
in the Driver Information Center (DIC) comes on, it
means that service is required for your vehicle.
Have your vehicle serviced as soon as possible
within the next 600 miles (1 000 km). It is possible
that, if you are 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 GM Goodwrench
®dealer has GM-trained
service technicians who will perform this work using
genuine GM parts and reset the system.
505

If the engine oil life system is ever reset
accidentally, you must service your vehicle within
3,000 miles (5 000 km) since your last service.
Remember to reset the oil life system whenever
the oil is changed. SeeEngine Oil Life System on
page 383for information on the Engine Oil Life
System and resetting the system.
When the CHANGE ENGINE OIL SOON message
appears, certain services, checks, and inspections
are required. Required services are described
in the following for “MaintenanceI” and
“MaintenanceII.” Generally, it is recommended
that your rst service be MaintenanceI, your
second service be MaintenanceII, and that you
alternate MaintenanceIand MaintenanceII
thereafter. However, in some cases,
MaintenanceIImay be required more often.MaintenanceI— Use MaintenanceIif the
CHANGE ENGINE OIL SOON message comes on
within 10 months since the vehicle was purchased
or MaintenanceIIwas performed.
MaintenanceII— Use MaintenanceIIif the
previous service performed was MaintenanceI.
Always use MaintenanceIIwhenever the message
comes on 10 months or more since the last
service or if the message has not come on at all
for one year.
506

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 380. Reset oil life system.
SeeEngine Oil Life System on page 383.An Emission Control Service.••
Visually check for any leaks or damage.See footnote (k).••
Inspect engine air cleaner lter. If necessary, replace lter. SeeEngine Air
Cleaner/Filter on page 386.See footnote (m).•
Check tires for ination pressures and wear. SeeTires on page 421. If tire
rotation is recommended for your vehicle, rotate tires. SeeTire Inspection and
Rotation on page 438and “Tire Wear Inspection” inAt Least Once a Month on
page 513.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels. If you have 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 (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
Replace passenger compartment air lter.See footnote (g).•
507