Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Cadillac STS VFACTORY OEM SERVICE PROCEDURE
Wiring Systems And Power Management - Component Connector End Views - 2 Of 5
Select a section or procedure below to view factory instructions:
Data Link Connector (DLC)Digital Radio Receiver (U2K)Distance Sensing Cruise Control Module (K59)Door Handle Switch Assembly - Left FrontDoor Handle Switch Assembly - Right FrontDoor Latch Assembly - DriverDoor Latch Assembly - Left RearDoor Latch Assembly - PassengerDoor Latch Assembly - Right RearDoor Lock Switch - DriverDoor Lock Switch - PassengerDoor Status Indicator - DriverDoor Status Indicator - PassengerDriver Door Module (DDM) - X1Driver Door Module (DDM) - X2Driver Door Module (DDM) - X3 (Outside Rearview Mirror - Driver)Driver Door Module (DDM) - X4 (Outside Rearview Mirror - Driver)Driver Door Switch Assembly (DDSA)Electronic Brake Control Module (EBCM) (JL7)Electronic Brake Control Module (EBCM) (-JL7)Electronic Suspension Control (ESC) Module (F55)Engine Control Module (ECM) X1 (LC3)Engine Control Module (ECM) X1 (LH2)Engine Control Module (ECM) X1 (LLT)Engine Control Module (ECM) X2 (LC3)Engine Control Module (ECM) X2 (LH2)Engine Control Module (ECM) X2 (LLT)Engine Control Module (ECM) X3 (LC3)Engine Control Module (ECM) X3 (LH2)Engine Coolant Temperature (ECT) Sensor (LC3)Engine Coolant Temperature (ECT) Sensor (LH2)Engine Coolant Temperature (ECT) Sensor (LLT)Engine Oil Level Switch (LH2)Engine Oil Level and Temperature Sensor (LC3)Engine Oil Pressure (EOP) Sensor (LC3/LH2)Engine Oil Pressure (EOP) Sensor (LLT)Evaporative Emission (EVAP) Canister Purge Solenoid Valve (LC3/LH2)Evaporative Emission (EVAP) Canister Purge Solenoid Valve (LLT)Evaporative Emission (EVAP) Canister Vent SolenoidEvaporator Temperature SensorFog Lamp - Left FrontFog Lamp - Left Rear (TT7/TT8)Fog Lamp - Right FrontFog Lamp - Right Rear (TT7/TT8)Front Passenger Door Module (FPDM) - X1Front Passenger Door Module (FPDM) - X2Front Passenger Door Module (FPDM) - X3 (Outside Rearview Mirror - Passenger)Front Passenger Door Module (FPDM) - X4 (Outside Rearview Mirror - Passenger)Fuel Injector 1 (LC3)Fuel Injector 1 (LH2)Fuel Injector 1 (LLT)Fuel Injector 2 (LC3)Fuel Injector 2 (LH2)Fuel Injector 2 (LLT)Fuel Injector 3 (LC3)Fuel Injector 3 (LH2)Fuel Injector 3 (LLT)Fuel Injector 4 (LC3)Fuel Injector 4 (LH2)Fuel Injector 4 (LLT)Fuel Injector 5 (LC3)Fuel Injector 5 (LH2)Fuel Injector 5 (LLT)Fuel Injector 6 (LC3)Fuel Injector 6 (LH2)Fuel Injector 6 (LLT)Fuel Injector 7 (LC3)Fuel Injector 7 (LH2)Fuel Injector 8 (LC3)Fuel Injector 8 (LH2)Fuel Pump and Sender AssemblyFuel Rail Pressure Sensor (LLT)Fuel Tank Pressure (FTP) SensorGarage Door Opener (UG1)GeneratorHazard SwitchHeadlamp Ballast - Left (Low Beam + HID)Headlamp Ballast - Right (Low Beam + HID)Headlamp High Beam - LeftHeadlamp High Beam - RightHeadlamp Leveling Actuator - Left (TR7)Headlamp Leveling Actuator - Right (TR7)Headlamp Leveling ModuleHeadlamp Low Beam - Left (-HID)Headlamp Low Beam - Right (-HID)Headlamp Washer Fluid Pump (CE4)Headlamp Washer Fluid Pump Relay (CE4)Head-Up Display (HUD) (UV6)Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 1 (LC3)Heated Oxygen Sensor (HO2S) - Bank 1 Sensor 1 (LH2)
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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