Fuse Box Diagrams Cadillac STS/STS-V (2008-2011)

In this article, you will find information about the fuses of the Cadillac STS/STS-V (models 2008, 2009, 2010, and 2011), including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.

Cadillac STS/STS-V (2008-2011)

Checking and Replacing Fuses in Cadillac STS/STS-V

The wiring circuits in your vehicle are protected from short circuits by a combination of fuses, circuit breakers and fusible thermal links. Circuit breakers protect the power windows and power seats. When the current load is too heavy, the circuit breaker opens and closes, protecting the circuit until the problem is fixed or goes away. This greatly reduces the chance of fires caused by electrical problems. Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse.

Caution!

Be sure you replace a bad fuse with a new one of the identical size and rating.

Spilling liquid on any electrical components on your vehicle may damage it. Always keep the covers on any electrical component.

Location of Fuse Boxes

Underhood Fuse Block:
The underhood fuse block is located in the front of the engine compartment on the passenger’s side of the vehicle. To access the fuses, push in the tabs located on each side of the fuse block cover. Then, lift the cover off.
Cadillac STS/STS-V (2008-2011): Engine compartment fuse box location

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.
Cadillac STS/STS-V (2008-2011): Rear Underseat Fuse Blocks location

Removing the Rear Seat Cushion

To remove the rear seat cushion, do the following:
1. Pull up on the front of the cushion to release the front hooks.
2. Pull the cushion up and out toward the front of the vehicle.

After reinstalling the seat cushion, always check to be sure that the safety belts are properly routed and are not twisted.
If you touch the exposed wires with the metal on the seat cushion, you could cause a short that could damage the battery and or wires. Avoid contact between the rear seat and the fuse center whenever you remove or reinstall the rear seat. Do not remove covers from any of the covered parts, and do not store anything under the seats.
The headlamp wiring has an individual fuse. An electrical overload will cause the lamps to go on and off, or in some cases to remain off. If this happens, have the headlamp wiring checked right away.
The windshield wiper motor is protected by an internal circuit breaker. If the wiper motor overheats due to heavy snow, the wipers will stop until the motor cools and will then restart.

Fuse Box Diagrams

2008

Underhood Fuse Block

Cadillac STS/STS-V (2008): Engine compartment fuse box diagram

List of fuses in the Underhood Fuse Block (2008)
NameUsage
JCase
ABS MTRABS Module-ABS Module-StabiliTrak
AFSActive Front Steering
BLWRBlower Motor
FAN 1Cooling Fan-Low Speed
FAN 2Cooling Fan-High Speed
LPDB 1Driver Side Rear Fuse Block
LPDB 2Driver Side Rear Fuse Block
RPDB 1Passenger Side Rear Fuse Block
RPDB 2Passenger Side Rear Fuse Block
SPARESpare
SPARESpare
STRTRStarter
Fuses Mini
A/C CLTCHAir Conditioning Compressor Clutch
ABSABS Module-StabiliTrak
ABS IGNAntilock Brake Controller
AUX OUTLETRear Accessory Power Outlet
BRK VAC PUMPBrake Vacuum Pump
CCPClimate Control Panel
CCP/RLY COILSClimate Control Panel, Headlamp Level Control, Active Cruise Control, Relay Coils, Starter, Front Blower
ECM 1Engine Control Module (ECM)
ECM/TCM BATTECM, Transmission Control Module (TCM)
ECM/TCM IGNECM, TCM, Instrument Panel Cluster
EKM/I/P MDLEasy Key Module (EKM), Instrument Panel Module (l/P MDL)
EVEN COILSEven Ignition Coils, Even Fuel Injectors
FOG LAMPFront Fog Lamps
FRT PWR OUTLETFront Accessory Power Outlet
FUEL COOLFuel Cooling
HORNHorn
HTD WASH/AQSHeated Headlamp Washer, Air Quality Sensor
HUDHeads-Up Display, Steering Column Switch
l/BEAMIntelliBeam Relay
l/P MDL/ALDLInstrument Panel Module, Assembly Line Data Link Connector
LIC DIMLicense Plate, Instrument Panel Dimming
LT HI BEAMDriver Side High Beam Headlamp
LT LO BEAMDriver Side Low Beam Headlamp
LT PRKDriver Side Park Lamp / Driver Side Taillamp
ODD COILSOdd Ignition Coils, Odd Fuel Injectors
POST O2 SNSRPost Oxygen Sensor
PRE O2 SNSRPre Oxygen Sensor, CAM Sensors
RAIN SNSR/TPMRain Sensor, Relay Coil: Headlamp Wash
RT HI BEAMPassenger Side High Beam Headlamp
RT LO BEAMPassenger Side Low Beam Headlamp
RT PRKPassenger Side Park Lamp, Passenger Side Taillamp
SPARESpare
SPARESpare
SPARESpare
SPARESpare
SPARESpare
SPARESpare
SPARESpare
V/CHKInstrument Panel Module-Voltage Check
WPRWipe/Wash Module Assembly
WPR SWA/ICSRain Sensor, Wiper Switch
Relays
A/C CMPRSR CLTCHAir Conditioning Compressor Clutch
ACCYAccessory Rain Sensor, Headlamp Washer Relay Coil, Windshield Wiper/Washer Module
BRK VAC PUMPBrake Vacuum Pump
FAN S/PCooling Fan Series / Parallel
FOG LAMPFog Lamps
FRT BLWRFront Blower Motor
FUEL COOLFuel Cooling Pump
HI BEAMHigh Beam Headlamp
HI FAN SPDCooling Fan High Speed
HORNHorn
LO FAN SPDCooling Fan Low Speed
LOW BEAM W/O HID/HIDLow Beam Headlamp, High Intensity Discharge (HID)
PRKLAMPParking Lamps, Instrument Panel Dimming, Rear License Plate Lamps
PWR/TRNEngine Controls
RUN CRNKHeated Washer Nozzle, Air Quality, Antilock Brake System, Climate Control Panel, TCM, ECM, Instrument Control Panel, Instrument Control Panel Cluster
SPARESpare
SPARESpare
SPARESpare
STRTRStarter
WPR HIWindshield Wiper High Speed
Circuit Breakers
HDLP WASHHeadlamp Washer Motor (Circuit Breaker)
Rear Underseat Fuse Block (Driver’s Side)

Cadillac STS/STS-V (2008): Rear Underseat Fuse Block diagram

List of fuses in the Rear Underseat Fuse Block (Driver’s Side) (2008)
FusesUsage
AMPAmplifier
INCLR PUMPInner Cooler Pump (Option)
THEFT/SHFTTheft Sensors, Auto Shifter, Power Sounder
MRTD MDLMagnetic Ride Control Module (Option)
REAR DR MDLRear Door Modules
ELC EXHElectronic Level Control, Exhaust Solenoid (Option)
DDMDriver Door Module, Front Door SubWoofers (Option)
TV/VICS/SCMInfotainment (Export Only), Supervisory Control Module (Option)
REAR HTD/SEATSRear Heated Seats
SPARESpare
SPARESpare
IGN3Front Passenger Heated Seat, Auto Shifter, Occupant Protection, Electronic Tension Reducer for Seatbelt
REAR SHLF SPKRRear Shelf Speaker (Option)
MSMMemory Seat Module Lumbar
TRUNK RELSE SWTrunk Release, Valet Lockout Switch
BCK/UP LAMPReverse Lamps, Rear Parking Aid, Inside Rearview Mirrors
AIR BAG/BATTAirbag
POS LAMPSRear Taillamps
ELC CMPRSRAutomatic Level Control (Option)
Relays
INCLR PUMPInner Cooler Pump (Option)
ELC CMPRSRElectronic Level Control, Compressor (Option)
LT POSLeft Rear Taillamp, Position Lamps (Option)
RT POSRight Rear Taillamp, Position Lamps (Option)
RUNIgnition 3
STDBY LAMPRear Taillamps, Position Lamps (Option)
TRUNK RELSETrunk Release Motor
BCK/UP LAMPReverse Lamps, Rear Parking Aid, Inside Rearview Mirror
Circuit Breakers
PWR SEATSPower Seats
Diodes
SPARESpare
Joint Connector
J/CSplice Pack (Green)
Rear Underseat Fuse Block (Passenger’s Side)

Cadillac STS/STS-V (2008): Rear Underseat Fuse Block diagram

List of fuses in the Rear Underseat Fuse Block (Passenger’s Side) (2008)
FusesUsage
AIRBAG/IGNSensing and Diagnostic Monitor, Automatic Occupant Sensor, Passenger Supplemental Inflatable Restraint
CNSTR/VENTCanister Vent Solenoid
DIFF PUMPRear Differential Pump
FRT PDMFront Passenger Door Module, Right Power Subwoofer
FUEL PUMPFuel Pump
HTD STRHeated Steering Wheel
RF HTD/SEAT/XMFront Passenger Heated Seat, S-Band Antenna
RDO/ONSTARRadio, OnStar
INT LAMPInterior Lamps
LT TRN/LDWLeft Turn Signal, Lane Departure Warning (Option)
REAR DEFOGRear Defogger
REAR/FOGRear Fog Lamps (Option)
RIMRear 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/ROOFSun Roof Module (Option)
SPARESpare
STOP LAMPSStop Lamps
RT TRN/SZBARight Turn Signal, Side Blind Zone Alert (Option)
Relays
DIFF PUMPRear Differential Pump (Option)
FUEL PUMPFuel Pump
INT LAMPInterior Lamps
REAR DEFOGRear Defogger
REAR/FOGRear Fog Lamps (Option)
RUN/CRNKIgnition 1
SPARESpare
STOP LAMPStop Lamp
Circuit Breakers
WINDOW MTRSPower Window Motors Circuit Breaker
Diodes
TRUNK DIODETrunk Release
Joint Connector
J/CSplice Pack (Blue)

2009

Underhood Fuse Block

Cadillac STS/STS-V (2009): Engine compartment fuse box diagram

List of fuses in the Underhood Fuse Block (2009)
NameUsage
Fuses JCase
ABS MTRABS Module - ABS Module-Stabilitrak
AFSActive Front Steering
BLWRBlower Motor
FAN 1Cooling Fan-Low Speed
FAN 2Cooling Fan-High Speed
LPDB 1Driver Side Rear Fuse Block
LPDB 2Driver Side Rear Fuse Block
RPDB 1Passenger Side Rear Fuse Block
RPDB 2Passenger Side Rear Fuse Block
SPARESpare
SPARESpare
STRTRStarter
Fuses Mini
A/C CLTCHAir Conditioning Compressor Clutch
ABSABS Module-Stabilitrak
ABS IGNAntilock Brake Controller
AUX OUTLETRear Accessory Power Outlet
BRK VAC PUMPBrake Vacuum Pump
CCPClimate Control Panel
CCP/RLY COILSClimate Control Panel, Headlamp Level Control, Active Cruise Control, Relay Coils, Starter, Front Blower
ECM 1Engine Control Module (ECM)
ECM/TCM BATTECM, Transmission Control Module (TCM)
ECM/TCM IGNECM, TCM, Instrument Panel Cluster
EKM/I/P MDLEasy Key Module (EKM), Instrument Panel Module (l/P MDL)
EVEN COILSEven Ignition Coils, Even Fuel Injectors
FOG LAMPFront Fog Lamps
FRT PWR OUTLETFront Accessory Power Outlet
FUEL COOLFuel Cooling
HORNHorn
HTD WASH/AQSHeated Headlamp Washer, Air Quality Sensor
HUDHeads-Up Display, Steering Column Switch
l/BEAMIntelliBeam Relay
l/P MDL/ALDLInstrument Panel Module, Assembly Line Data Link Connector
LIC DIMLicense Plate, Instrument Panel Dimming
LT HI BEAMDriver Side High Beam Headlamp
LT LO BEAMDriver Side Low Beam Headlamp
LT PRKDriver Side Park Lamp / Driver Side Taillamp
ODD COILSOdd Ignition Coils, Odd Fuel Injectors
POST O2 SNSRPost Oxygen Sensor
PRE O2 SNSRPre Oxygen Sensor, CAM Sensors
RAIN SNSR/TPMRain Sensor, Relay Coil: Headlamp Wash
RT HI BEAMPassenger Side High Beam Headlamp
RT LO BEAMPassenger Side Low Beam Headlamp
RT PRKPassenger Side Park Lamp, Passenger Side Taillamp
SPARESpare
SPARESpare
SPARESpare
SPARESpare
SPARESpare
SPARESpare
SPARESpare
V/CHKInstrument Panel Module-Voltage Check
WPRWipe/Wash Module Assembly
WPR SW/VICSRain Sensor, Wiper Switch
Relays
A/C CMPRSR CLTCHAir Conditioning Compressor Clutch
ACCYAccessory, Rain Sensor, Headlamp Washer Relay Coil, Windshield Wiper/Washer Module
BRK VAC PUMPBrake Vacuum Pump
FAN S/PCooling Fan Series / Parallel
FOG LAMPFog Lamps
FRT BLWRFront Blower Motor
FUEL COOLFuel Cooling Pump
HI BEAMHigh Beam Headlamp
HI FAN SPDCooling Fan High Speed
HORNHorn
LO FAN SPDCooling Fan Low Speed
LOW BEAM W/O HID/HIDLow Beam Headlamp, High Intensity Discharge (HID)
PRKLAMPParking Lamps, Instrument Panel Dimming, Rear License Plate Lamps
PWR/TRNEngine Controls
RUN CRNKHeated Washer Nozzle, Air Quality, Antilock Brake System, Climate Control Panel, TCM, ECM, Instrument Panel Cluster
SPARESpare
SPARESpare
SPARESpare
STRTRStarter
WPR HIWindshield Wiper High Speed
Circuit Breakers
HDLP WASHHeadlamp Washer Motor (Circuit Breaker)
Rear Underseat Fuse Block (Driver’s Side)

Cadillac STS/STS-V (2009): Rear Underseat Fuse Block diagram

List of fuses in the Rear Underseat Fuse Block (Driver’s Side) (2009)
NameUsage
AMPAmplifier
INCLR PUMPInner Cooler Pump (Option)
THEFT/SHFTTheft Sensors, Auto Shifter, Power Sounder
MRTD MDLMagnetic Ride Control Module (Option)
REAR DR MDLRear Door Modules
ELC EXHElectronic Level Control, Exhaust Solenoid (Option)
DDMDriver Door Module, Front Door SubWoofers (Option)
TV/VICS/SCMInfotainment (Export Only), Supervisory Control Module (Option)
REAR HTD/SEATSRear Heated Seats
SPARESpare
SPARESpare
IGN3Front Passenger Heated Seat, Auto Shifter, Occupant Protection, Electronic Tension Reducer for Seatbelt
REAR SHLF SPKRRear Shelf Speaker (Option)
MSMMemory Seat Module Lumbar
TRUNK RELSE SWTrunk Release, Valet Lockout Switch
BCK/UP LAMPReverse Lamps, Rear Parking Aid, Inside Rearview Mirrors
AIR BAG/BATTAirbag
POS LAMPSRear Taillamps
ELC CMPRSRAutomatic Level Control (Option)
Relays
INCLR PUMPInner Cooler Pump (Option)
ELC CMPRSRElectronic Level Control, Compressor (Option)
LT POSLeft Rear Taillamp, Position Lamps (Option)
RT POSRight Rear Taillamp, Position Lamps (Option)
RUNIgnition 3
STDBY LAMPRear Taillamps, Position Lamps (Option)
TRUNK RELSETrunk Release Motor
BCK/UP LAMPReverse Lamps, Rear Parking Aid, Inside Rearview Mirror
Circuit Breakers
PWR SEATSPower Seats
Diodes
SPARESpare
Joint Connector
J/CSplice Pack (Green)
Rear Underseat Fuse Block (Passenger’s Side)

Cadillac STS/STS-V (2009): Rear Underseat Fuse Block diagram

List of fuses in the Rear Underseat Fuse Block (Passenger’s Side) (2009)
FusesUsage
AIRBAG/IGNSensing and Diagnostic Monitor, Automatic Occupant Sensor, Passenger Supplemental Inflatable Restraint
CNSTR/VENTCanister Vent Solenoid
DIFF PUMPRear Differential Pump
FRT PDMFront Passenger Door Module, Right Power Subwoofer
FUEL PUMPFuel Pump
HTD STRHeated Steering Wheel
RF HTD/SEAT/XMFront Passenger Heated Seat, S-Band Antenna
RDO/ONSTARRadio, OnStar
INT LAMPInterior Lamps
LT TRN/LDWLeft Turn Signal, Lane Departure Warning (Option)
REAR DEFOGRear Defogger
REAR/FOGRear Fog Lamps (Option)
RIMRear 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/ROOFSun Roof Module (Option)
SPARESpare
STOP LAMPSStop Lamps
RT TRN/SZBARight Turn Signal, Side Blind Zone Alert (Option)
Relays
DIFF PUMPRear Differential Pump (Option)
FUEL PUMPFuel Pump
INT LAMPInterior Lamps
REAR DEFOGRear Defogger
REAR/FOGRear Fog Lamps (Option)
RUN/CRNKIgnition 1
SPARESpare
STOP LAMPStop Lamp
Circuit Breakers
WINDOW MTRSPower Window Motors Circuit Breaker
Diodes
TRUNK DIODETrunk Release
Joint Connector
J/CSplice Pack (Blue)

2010

Underhood Fuse Block

Cadillac STS/STS-V (2010): Engine compartment fuse box diagram

List of fuses in the Underhood Fuse Block (2010)
NameUsage
JCase
ABS MTRABS Module-ABS Module-Stabilitrak
AFSActive Front Steering
BLWRBlower Motor
FAN 1Cooling Fan-Low Speed
FAN 2Cooling Fan-High Speed
LPDB 1Driver Side Rear Fuse Block
LPDB2Driver Side Rear Fuse Block
RPDB 1Passenger Side Rear Fuse Block
RPDB2Passenger Side Rear Fuse Block
SPARESpare
SPARESpare
STRTRStarter
Fuses Mini
A/C CLTCHAir Conditioning Compressor Clutch
ABSABS Module-Stabilitrak
ABS IGNAntilock Brake Controller
AUX OUTLETRear Accessory Power Outlet
BRK VAC PUMPBrake Vacuum Pump
CCPClimate Control Panel
CCP/RLY COILSClimate Control Panel, Headlamp Level Control, Active Cruise Control, Relay Coils, Starter, Front Blower
ECM 1Engine Control Module (ECM)
ECM / TCM BATTECM, Transmission Control Module (TCM)
ECM/TCM IGNECM, TCM, Instrument Panel Cluster
EKM/I/P MDLEasy Key Module (EKM), Instrument Panel Module (l/P MDL)
EVEN COILSEven Ignition Coils, Even Fuel Injectors
FOG LAMPFront Fog Lamps
FRT PWR OUTLETFront Accessory Power Outlet
FUEL COOLFuel Cooling
HORNHorn
HTD WASH/AQSHeated Headlamp Washer, Air Quality Sensor
HUDHeads-Up Display, Steering Column Switch
l/BEAMIntelliBeam Relay
l/P MDL/ALDLInstrument Panel Module, Assembly Line Data Link Connector
LIC DIMLicense Plate, Instrument Panel Dimming
LT HI BEAMDriver Side High Beam Headlamp
LT LO BEAMDriver Side Low Beam Headlamp
LTPRKDriver Side Park Lamp / Driver Side Taillamp
ODD COILSOdd Ignition Coils, Odd Fuel Injectors
POST O2 SNSRPost Oxygen Sensor
PRE O2 SNSRPre Oxygen Sensor, CAM Sensors
RAIN SNSR/TPMRain Sensor, Relay Coil: Headlamp Wash
RT HI BEAMPassenger Side High Beam Headlamp
RT LO BEAMPassenger Side Low Beam Headlamp
RT PRKPassenger Side Park Lamp, Passenger Side Taillamp
SPARESpare
SPARESpare
SPARESpare
SPARESpare
SPARESpare
SPARESpare
SPARESpare
V/CHKInstrument Panel Module-Voltage Check
WPRWipe/Wash Module Assembly
WPR SW/VICSRain Sensor, Wiper Switch
Relays
A/C CMPRSR CLTCHAir Conditioning Compressor Clutch
ACCYAccessory, Rain Sensor, Headlamp Washer Relay Coil, Windshield Wiper/Washer Module
BRK VAC PUMPBrake Vacuum Pump
FAN S/PCooling Fan Series/Parallel
FOG LAMPFog Lamps
FRT BLWRFront Blower Motor
FUEL COOLFuel Cooling Pump
HI BEAMHigh Beam Headlamp
HI FAN SPDCooling Fan High Speed
HORNHorn
LO FAN SPDCooling Fan Low Speed
LOW BEAM W/O HID/HIDLow Beam Headlamp, High Intensity Discharge (HID)
PRKLAMPParking Lamps, Instrument Panel Dimming, Rear License Plate Lamps
PWR/TRNEngine Controls
RUN CRNKHeated Washer Nozzle, Air Quality, Antilock Brake System, Climate Control Panel, TCM, ECM, Instrument Panel Cluster
SPARESpare
SPARESpare
SPARESpare
STRTRStarter
WPR HIWindshield Wiper High Speed
Circuit Breakers
HDLP WASHHeadlamp Washer Motor (Circuit Breaker)
Rear Underseat Fuse Block (Driver’s Side)

Cadillac STS/STS-V (2010): Rear Underseat Fuse Block diagram

List of fuses in the Rear Underseat Fuse Block (Driver’s Side) (2010)
NameUsage
AMPAmplifier
SPARESpare
THEFT/SHFTTheft Sensors, Auto Shifter, Power Sounder
MRTD MDLMagnetic Ride Control Module (Option)
REAR DR MDLRear Door Modules
ELC EXHElectronic Level Control, Exhaust Solenoid (Option)
DDMDriver Door Module, Front Door SubWoofers (Option)
TV/VICS/SCMInfotainment (Export Only), Supervisory Control Module (Option)
REAR HTD/ SEATSRear Heated Seats
SPARESpare
SPARESpare
IGN 3Front Passenger Heated Seat, Auto Shifter, Occupant Protection, Electronic Tension Reducer for Seatbelt
REAR SHLF SPKRRear Shelf Speaker (Option)
MSMMemory Seat Module Lumbar
TRUNK RELSE SWTrunk Release, Valet Lockout Switch
BCK/UP LAMPReverse Lamps, Rear Parking Aid, Inside Rearview Mirrors
AIR BAG/BATTAirbag
POS LAMPSRear Taillamps
ELC CMPRSRAutomatic Level Control (Option)
Relays
SPARESpare
ELC CMPRSRElectronic Level Control, Compressor (Option)
LTPOSLeft Rear Taillamp, Position Lamps (Option)
RT POSRight Rear Taillamp, Position Lamps (Option)
RUNIgnition 3
STDBY LAMPRear Taillamps, Position Lamps (Option)
TRUNK RELSETrunk Release Motor
BCK/UP LAMPReverse Lamps, Rear Parking Aid, Inside Rearview Mirror
Circuit Breakers
PWR SEATSPower Seats
Diodes
SPARESpare
Joint Connector
J/CSplice Pack (Green)
Rear Underseat Fuse Block (Passenger’s Side)

Cadillac STS/STS-V (2010): Rear Underseat Fuse Block diagram

List of fuses in the Rear Underseat Fuse Block (Passenger’s Side) (2010)
NameUsage
AIRBAG/IGNSensing and Diagnostic Monitor, Automatic Occupant Sensor, Passenger Supplemental Inflatable Restraint
CNSTR/VENTCanister Vent Solenoid
SPARESpare
FRT PDMFront Passenger Door Module, Right Power Subwoofer
FUEL PUMPFuel Pump
HTD STRHeated Steering Wheel
RF HTD/ SEAT/XMFront Passenger Heated Seat, S-Band Antenna
RDO/ONSTARRadio, OnStar
INT LAMPInterior Lamps
LT TRN/LDWLeft Turn Signal, Lane Departure Warning (Option)
REAR DEFOGRear Defogger
REAR/FOGRear Fog Lamps (Option)
RIMRear 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/ROOFSun Roof Module (Option)
SPARESpare
STOP LAMPSStop Lamps
RT TRN/SZBARight Turn Signal, Side Blind Zone Alert (Option)
Relays
SPARESpare
FUEL PUMPFuel Pump
INT LAMPInterior Lamps
REAR DEFOGRear Defogger
REAR/FOGRear Fog Lamps (Option)
RUN/CRNKIgnition 1
SPARESpare
STOP LAMPStop Lamp
Circuit Breakers
WINDOW MTRSPower Window Motors Circuit Breaker
Diodes
TRUNK DIODETrunk Release
Joint Connector
J/CSplice Pack (Blue)

2011

Underhood Fuse Block

Cadillac STS/STS-V (2011): Engine compartment fuse box diagram

List of fuses in the Underhood Fuse Block (2011)
NameUsage
Fuses JCase
ABS MTRABS Module- ABS Module-Stabilitrak
AFSActive Front Steering
BLWRBlower Motor
FAN 1Cooling Fan-Low Speed
FAN 2Cooling Fan-High Speed
LPDB 1Driver Side Rear Fuse Block
LPDB 2Driver Side Rear Fuse Block
RPDB 1Passenger Side Rear Fuse Block
RPDB 2Passenger Side Rear Fuse Block
SPARESpare
SPARESpare
STRTRStarter
Fuses Mini
A/C CLTCHAir Conditioning Compressor Clutch
ABSABS Module-Stabilitrak
ABS IGNAntilock Brake Controller
AUX OUTLETRear Accessory Power Outlet
BRK VAC PUMPBrake Vacuum Pump
CCPClimate Control Panel
CCP/RLY COILSClimate Control Panel, Headlamp Level Control, Active Cruise Control, Relay Coils, Starter, Front Blower
ECM 1Engine Control Module (ECM)
ECM/TCM BATTECM, Transmission Control Module (TCM)
ECM/TCM IGNECM, TCM, Instrument Panel Cluster
EKM/I/P MDLEasy Key Module (EKM), Instrument Panel Module (l/P MDL)
EVEN COILSEven Ignition Coils, Even Fuel Injectors
FOG LAMPFront Fog Lamps
FRT PWR OUTLETFront Accessory Power Outlet
FUEL COOLFuel Cooling
HORNHorn
HTD WASH/AQSHeated Headlamp Washer, Air Quality Sensor
HUDHeads-Up Display, Steering Column Switch
l/BEAMIntelliBeam Relay
l/P MDL/ALDLInstrument Panel Module, Assembly Line Data Link Connector
LIC DIMLicense Plate, Instrument Panel Dimming
LT HI BEAMDriver Side High Beam Headlamp
LT LO BEAMDriver Side Low Beam Headlamp
LT PRKDriver Side Park Lamp / Driver Side Taillamp
ODD COILSOdd Ignition Coils, Odd Fuel Injectors
POST O2 SNSRPost Oxygen Sensor
PRE O2 SNSRPre Oxygen Sensor, CAM Sensors
RAIN SNSR/TPMRain Sensor, Relay Coil: Headlamp Wash
RT HI BEAMPassenger Side High Beam Headlamp
RT LO BEAMPassenger Side Low Beam Headlamp
RT PRKPassenger Side Park Lamp, Passenger Side Taillamp
SPARESpare
SPARESpare
SPARESpare
SPARESpare
SPARESpare
SPARESpare
SPARESpare
V/CHKInstrument Panel Module-Voltage Check
WPRWipe/Wash Module Assembly
WPR SW/VICSRain Sensor, Wiper Switch
Relays
A/C CMPRSR CLTCHAir Conditioning Compressor Clutch
ACCYAccessory, Rain Sensor, Headlamp Washer Relay Coil, Windshield Wiper/Washer Module
BRK VAC PUMPBrake Vacuum Pump
FAN S/PCooling Fan Series / Parallel
FOG LAMPFog Lamps
FRT BLWRFront Blower Motor
FUEL COOLFuel Cooling Pump
HI BEAMHigh Beam Headlamp
HI FAN SPDCooling Fan High Speed
HORNHorn
LO FAN SPDCooling Fan Low Speed
LOW BEAM W/O HID/HIDLow Beam Headlamp, High Intensity Discharge (HID)
PRKLAMPParking Lamps, Instrument Panel Dimming, Rear License Plate Lamps
PWR/TRNEngine Controls
RUN CRNKHeated Washer Nozzle, Air Quality, Antilock Brake System, Climate Control Panel, TCM, ECM, Instrument Panel Cluster
SPARESpare
SPARESpare
SPARESpare
STRTRStarter
WPR HIWindshield Wiper High Speed
Circuit Breakers
HDLP WASHHeadlamp Washer Motor (Circuit Breaker)
Rear Underseat Fuse Block (Driver’s Side)

Cadillac STS/STS-V (2011): Rear Underseat Fuse Block diagram

List of fuses in the Rear Underseat Fuse Block (Driver’s Side) (2011)
NameUsage
AMPAmplifier
SPARESpare
THEFT/SHFTTheft Sensors, Auto Shifter, Power Sounder
MRTD MDLMagnetic Ride Control Module (Option)
REAR DR MDLRear Door Modules
ELC EXHElectronic Level Control, Exhaust Solenoid (Option)
DDMDriver Door Module, Front Door SubWoofers (Option)
TVA/ICS/SCMInfotainment (Export Only), Supervisory Control Module (Option)
REAR HTD/ SEATSRear Heated Seats
SPARESpare
SPARESpare
IGN 3Front Passenger Heated Seat, Auto Shifter, Occupant Protection, Electronic Tension Reducer for Seatbelt
REAR SHLFSPKRRear Shelf Speaker (Option)
MSMMemory Seat Module Lumbar
TRUNK RELSE SWTrunk Release, Valet Lockout Switch
BCK/UP LAMPReverse Lamps, Rear Parking Aid, Inside Rearview Mirrors
AIR BAG/BATTAirbag
POS LAMPSRear Taillamps
ELC CMPRSRAutomatic Level Control (Option)
Relays
SPARESpare
ELC CMPRSRElectronic Level Control, Compressor (Option)
LT POSLeft Rear Taillamp, Position Lamps (Option)
RT POSRight Rear Taillamp, Position Lamps (Option)
RUNIgnition 3
STDBY LAMPRear Taillamps, Position Lamps (Option)
TRUNK RELSETrunk Release Motor
BCK/UP LAMPReverse Lamps, Rear Parking Aid, Inside Rearview Mirror
Circuit Breakers
PWR SEATSPower Seats
Diodes
SPARESpare
Joint Connector
J/CSplice Pack (Green)
Rear Underseat Fuse Block (Passenger’s Side)

Cadillac STS/STS-V (2011): Rear Underseat Fuse Block diagram

List of fuses in the Rear Underseat Fuse Block (Passenger’s Side) (2011)
NameUsage
AIRBAG/IGNSensing and Diagnostic Monitor, Automatic Occupant Sensor, Passenger Supplemental Inflatable Restraint
CNSTRA/ENTCanister Vent Solenoid
SPARESpare
FRT PDMFront Passenger Door Module, Right Power Subwoofer
FUEL PUMPFuel Pump
HTD STRHeated Steering Wheel
RF HTD/ SEAT/XMFront Passenger Heated Seat, S-Band Antenna
RDO/ONSTARRadio, OnStar
INT LAMPInterior Lamps
LT TRN/LDWLeft Turn Signal, Lane Departure Warning (Option)
REAR DEFOGRear Defogger
REAR/FOGRear Fog Lamps (Option)
RIMRear 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/ROOFSun Roof Module (Option)
SPARESpare
STOP LAMPSStop Lamps
RT TRN/SZBARight Turn Signal, Side Blind Zone Alert (Option)
Relays
SPARESpare
FUEL PUMPFuel Pump
INT LAMPInterior Lamps
REAR DEFOGRear Defogger
REAR/FOGRear Fog Lamps (Option)
RUN/CRNKIgnition 1
SPARESpare
STOP LAMPStop Lamp
Circuit Breakers
WINDOW MTRSPower Window Motors Circuit Breaker
Diodes
TRUNK DIODETrunk Release
Joint Connector
J/CSplice Pack (Blue)