2007 CADILLAC CTS V engine

Vehicle Identication
Vehicle Identication Number (VIN)
This is the legal identier for your vehicle. It
appears on a plate in the front corner of the
instrument panel, on the driver side. You can see
it if you look through the windshield from outside
your vehicle. The VIN also appears on the Vehicle
Certication and Service Parts labels and the
certicates of title and registration.
Engine Identication
The eighth character in the VIN is the engine
code. This code helps you identify your vehicle’s
engine, specications, and replacement parts.
Service Parts Identication Label
This label is on your spare tire cover. It is
very helpful if you ever need to order parts. The
label has the following information:
Vehicle Identication Number (VIN)
Model designation
Paint information
Production options and special equipment
Do not remove this label from the vehicle.
445

Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected
from short circuits by a combination of fuses
and circuit breakers. This greatly reduces
the chance of res caused by electrical problems.
Look at the silver-colored band inside the fuse.
If the band is broken or melted, replace the fuse.
Be sure you replace a bad fuse with a new
one of the identical size and rating. If a fuse blows,
see your dealer for service immediately.
If you ever have a problem on the road and don’t
have a spare fuse, you can “borrow” one that has
the same amperage. Pick some feature of your
vehicle that you can get along without – like the
radio or cigarette lighter – and use its fuse, if it is the
correct amperage. Replace it as soon as you can.
The fuses are located in three fuse blocks,
one located in the engine compartment on the
passenger’s side and the other two under the
rear seat.
Underhood Fuse Block
The underhood fuse block is located in the engine
compartment on the passenger’s side of the
vehicle. SeeEngine Compartment Overview on
page 342for more information on location.
To access the fuses, push in the two tabs located
on each side of the fuse block cover. Then lift
the cover off.
447

Relays Usage
LO SPEED
FAN
RELAY MINILow Speed Fan Motor
HI SPEED FAN
RELAY MINIHigh Speed Fan Motor
ACCESSORY
RELAY MINIWipe-Wash
S/P FAN
RELAY MINISeries/Parallel Fan
PARK LAMP
RELAY MICROParking Lamps
Relays Usage
HORN RELAY
MICROHorn
HI BEAM
RELAY MICROHigh-Beam Headlamps
DRL RELAY
MICRO-OPTDaytime Running Lamps
LO BEAM
RELAY/HID
MINI-OPTLow-Beam Headlamps
HDLP WASH
RELAY
MINI-OPTHeadlamp Washer Motor
SPARE Not Used
BLOWER
RELAY MINIFront Blower
FOG LAMP
RELAY MICROFog Lamps
MAIN RELAY
MICROPowertrain/Engine Control
Module (ECM)
STARTER
RELAY MINIStarter Solenoid
CMP CLU
RELAY MICROCompressor Clutch
IGN-1 RELAY
MICROIgnition Switch (ON)
448

Wiring
HarnessesUsage
BODY W/H Wiring Harness Connection
BODY W/H Wiring Harness Connection
ENG W/H Engine Wiring Harness Connection
J Cases Usage
R REARRRPDB (Passenger’s Side Rear
Power Distribution Box)
R REARRRPDB (Passenger’s Side Rear
Power Distribution Box)
L REARLRPDB (Driver’s Side Rear Power
Distribution Box)
L REARLRPDB (Driver’s Side Rear Power
Distribution Box)
HI FAN High Cooling Fan Motor
LO FAN Low Cooling Fan Motor
BLOWER PWM Fan Motor Assembly
STARTER Starter Solenoid
ABS Anti-Lock Brake System
Fuses Usage
RT PARKPassenger’s Side Taillamp
Assembly, Front Sidemarker and
Front Parking Lamp Assembly
HORN Dual Horn Assembly
Fuses Usage
LT HI BEAM Driver’s Side High-Beam Headlamp
LT LOW BEAM Driver’s Side Low-Beam Headlamp
RT LOW BEAMPassenger’s Side Low-Beam
Headlamp
RT HI BEAMPassenger’s Side High-Beam
Headlamp
TOSManual Transmission Output Speed
Sensor
SPARE Not Used
THEFTECM (Engine Control Module),
TCM (Transmission Control Module),
PASS-Key
®III+ Module
LT PARKDriver’s Side Taillamp Assembly,
Front Sidemarker and Front Parking
Lamp Assembly
DIMMINGRear License Plate Assembly, Dash
Integrated Module (DIM)
DIM/ALDLDIM, ALDL (Assembly Line
Data Link)
FLASHER Turn Signal/Hazard Flasher Module
ECM Electronic Control Module
STRG CTLSTurn Signal Switch, Cruise Control
Switch
HTR VLV/
CLTCHClutch Switch (Normal Closed),
Clutch Switch (Normal Open),
Jumper to Start Relay Coil for
Automatic Transmission
449

Fuses Usage
WASH NOZDriver’s and Passenger’s Side
Heated Washer Nozzles
PRE O2/CAMDriver’s & Passenger’s Side Oxygen
Sensors, CAM Phaser, Canister
Purge
TCM/IPCTransmission Control Module,
Engine Control Module, Instrument
Panel Cluster
SPARE Not Used
IGN MOD/MAF Mass Airow Sensor
ELEC PRNDL Electronic PRNDL (Export)
SPARE Not Used
SPARE Not Used
IGN SWIgnition Switch (Power to IGN-3 and
CRANK)
VOLT CHECK DIM (Dash Integration Module)
ECM/TCMTCM (Transmission Control Module),
ECM (Engine Control Module), IPC
(Instrument Panel Cluster),
PASS-Key
®III+ Module
WPR MOD Windshield Wiper Module Assembly
ODD INJ/COILOdd Ignition Coils, Fuel Injectors,
Odd Injection Coils
COMP CLUTCH Compressor Clutch
Fuses Usage
WPR SW Windshield Wiper/Washer Switch
FOG LAMP Fog Lamps
OUTLETCenter Console Accessory Power
Outlet
POST 02Driver’s and Passenger’s Side
Oxygen Sensors, LRPDB (Pusher
Cooling Fan Relay)
I/P OUTLETInstrument Panel Accessory Power
Outlet
CCP Climate Control
EVEN INJ/COIL Even Injection Coils
SPARE Not Used
SPARE Not Used
SPARE Not Used
SPARE Not Used
Circuit
BreakersUsage
HDLP WASH
C/B-OPTHeadlamp Washer Motor
Misc. Usage
FUSE PULLER Fuse Puller
450

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended
Fluids and Lubricants on page 473for 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
2.8L HFV6 Engine 11.7 qt 11.1 L
3.6L HFV6 Engine 12.1 qt 11.8 L
6.0L V8 Engine 13.4 qt 12.7 L
Engine Oil with Filter
2.8L HFV6 Engine 6.0 qt 5.7 L
3.6L HFV6 Engine 6.0 qt 5.7 L
6.0L V8 Engine 6.0 qt 5.7 L
Fuel Tank 17.5 gal 66.2 L
457

ApplicationCapacities
English Metric
Transmission (Pan Removal and Replacement)
Automatic 7.4 qt 7.0 L
6-Speed Manual – CTS 1.9 qt 1.8 L
6-Speed Manual – CTS-V 3.7 qt 3.5 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
2.8L HFV6 T Automatic Manual 0.043 inches (1.1 mm)
3.6L HFV6 7Automatic
Manual0.043 inches (1.1 mm)
6.0L V8 U Manual 0.040 inches (1.02 mm)
CTS-V Engine Data
Engine Horsepower Torque Displacement Compression Ratio
6.0L V8 (LS2)400 hp (298 kW)@
6000 rpm395 ft lb (536 Nm)@
4400 rpm6.0 L 10.9:1
458

Maintenance Schedule................................ 460
Introduction............................................... 460
Maintenance Requirements........................ 460
Your Vehicle and the Environment............ 460
Using the Maintenance Schedule............... 461
Scheduled Maintenance............................. 462
Additional Required Services..................... 465
Maintenance Footnotes.............................. 467
Owner Checks and Services..................... 469At Each Fuel Fill....................................... 469
At Least Once a Month............................. 470
At Least Once a Year............................... 470
Recommended Fluids and Lubricants........ 473
Normal Maintenance
Replacement Parts................................. 475
Engine Drive Belt Routing......................... 476
Maintenance Record.................................. 477
Section 6 Maintenance Schedule
459