CADILLAC STS 2008 1.G Owners Manual

2. Slide the rear of the cushion up and under the
seatback so the rear-locating guides hook into
the wire loops on the back frame.
3. With the seat cushion lowered, push rearward and
then press down on the seat cushion until the
spring locks on both ends engage.
4. Check to make sure the safety belts are properly
routed and that no portion of any safety belt is
trapped under the seat. Also make sure the seat
cushion is secured.Rear Underseat Fuse Block
There is a fuse block located under the rear seat on the
driver’s side and passenger’s side of the vehicle. The
rear seat cushion must be removed to access the
fuse blocks. See “Removing the Rear Seat Cushion”
listed previously in this section.
To access the fuses, push in the two tabs, then lift the
cover off.
Your vehicle may not have all the fuses listed below.
5-123

Driver’s Side
Fuses Usage
AMP Amplier
INCLR PUMP Inner Cooler Pump (Option)
THEFT/SHFTTheft Sensors, Auto Shifter, Power
Sounder
MRTD MDLMagnetic Ride Control Module
(Option)Fuses Usage
REAR DR MDL Rear Door Modules
ELC EXHElectronic Level Control, Exhaust
Solenoid (Option)
DDMDriver Door Module, Front Door
SubWoofers (Option)
5-124

Fuses Usage
TV/VICS/SCMInfotainment (Export Only),
Supervisory Control Module (Option)
REAR
HTD/SEATSRear Heated Seats
SPARE Spare
SPARE Spare
IGN3Front Passenger Heated Seat, Auto
Shifter, Occupant Protection,
Electronic Tension Reducer for
Seatbelt
REAR SHLF
SPKRRear Shelf Speaker (Option)
MSM Memory Seat Module Lumbar
TRUNK
RELSE SWTrunk Release, Valet Lockout
Switch
BCK/UP LAMPReverse Lamps, Rear Parking Aid,
Inside Rearview Mirrors
AIR BAG/BATT Airbag
POS LAMPS Rear Taillamps
ELC CMPRSR Automatic Level Control (Option)
Relays Usage
INCLR PUMP Inner Cooler Pump (Option)
ELC CMPRSRElectronic Level Control,
Compressor (Option)
Relays Usage
LT POSLeft Rear Taillamp, Position Lamps
(Option)
RT POSRight Rear Taillamp, Position Lamps
(Option)
RUN Ignition 3
STDBY LAMPRear Taillamps, Position Lamps
(Option)
TRUNK RELSE Trunk Release Motor
BCK/UP LAMPReverse Lamps, Rear Parking Aid,
Inside Rearview Mirror
Circuit
BreakersUsage
PWR SEATS Power Seats
Diodes Usage
SPARE Spare
Joint
ConnectorUsage
J/C Splice Pack (Green)
5-125

Passenger’s Side
Fuses Usage
AIRBAG/IGNSensing and Diagnostic Monitor,
Automatic Occupant Sensor,
Passenger Supplemental Inatable
Restraint
CNSTR/VENT Canister Vent Solenoid
DIFF PUMP Rear Differential PumpFuses Usage
FRT PDMFront Passenger Door Module, Right
Power Subwoofer
FUEL PUMP Fuel Pump
HTD STR Heated Steering Wheel
RF
HTD/SEAT/XMFront Passenger Heated Seat,
S-Band™ Antenna
5-126

Fuses Usage
RDO/ONSTAR Radio, OnStar®
INT LAMP Interior Lamps
LT TRN/LDWLeft Turn Signal, Lane Departure
Warning (Option)
REAR DEFOG Rear Defogger
REAR/FOG Rear Fog Lamps (Option)
RIM Rear Integration Module
RIM /RPA /
ISRVM /CLMRear Integration Module, Rear
Parking Aid, Inside Rearview Mirror,
Column Lock Module, Power
Sounder, Active Front Steering
(AFS), Supervisory Control Module
RUN/CRNKUHBEC Run, CRNK Relay Coil,
Rear Fog Lamp Relay Coil
S/ROOF Sun Roof Module (Option)
SPARE Spare
STOP LAMPS Stop Lamps
RT TRN/SZBARight Turn Signal, Side Blind Zone
Alert (Option)
Relays Usage
DIFF PUMP Rear Differential Pump (Option)
FUEL PUMP Fuel Pump
INT LAMP Interior Lamps
Relays Usage
REAR DEFOG Rear Defogger
REAR/FOG Rear Fog Lamps (Option)
RUN/CRNK Ignition 1
SPARE Spare
STOP LAMP Stop Lamp
Circuit
Breakers Usage
WINDOW
MTRSPower Window Motors Circuit
Breaker
Diodes Usage
TRUNK DIODE Trunk Release
Joint
Connector Usage
J/C Splice Pack (Blue)
5-127

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended Fluids and
Lubricants on page 6-13for 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/retailer
for more information.
Cooling System
3.6L Engine 12.1 qt 11.5 L
4.4L (V-Series) Engine 13.4 qt 12.7 L
4.6L Engine 12.5 qt 11.8 L
Intercooler System 4.4L (V-Series) Engine 2.6 qt 2.5 L
Brake Fluid Capacities 1.1 qt 1.0 L
Engine Oil with Filter
3.6L Engine 6.0 qt 5.7 L
4.4L (V-Series) Engine 9.0 qt 8.5 L
4.6L Engine 8.0 qt 7.6 L
Fuel Tank 17.5 gal 66.2 L
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ApplicationCapacities
English Metric
Transmission (Pan Removal and Filter Replacement)
6-Speed Automatic 6.7 qt 6.3 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 SIDI V6 V 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
5-129

✍NOTES
5-130

Maintenance Schedule......................................6-2
Introduction...................................................6-2
Maintenance Requirements..............................6-2
Your Vehicle and the Environment....................6-2
Using the Maintenance Schedule......................6-3
Scheduled Maintenance...................................6-4
Additional Required Services............................6-6
Maintenance Footnotes...................................6-8Owner Checks and Services............................6-9
At Each Fuel Fill............................................6-9
At Least Once a Month.................................6-10
At Least Once a Year...................................6-11
Recommended Fluids and Lubricants...............6-13
Normal Maintenance Replacement Parts..........6-15
Engine Drive Belt Routing..............................6-16
Maintenance Record.....................................6-18
Section 6 Maintenance Schedule
6-1

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/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 your vehicle in good working
condition. Any damage caused by failure to follow
scheduled maintenance might not be covered
by warranty.
Your Vehicle and the Environment
Proper vehicle maintenance not only helps to keep your
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 your vehicle. To help protect our
environment, and to keep your vehicle in good condition,
be sure to maintain your vehicle properly.
6-2