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.
2000 Cadillac DeVille BaseFACTORY OEM SERVICE PROCEDURE
Body Control Modules
- Description
- Operation
- Component Locations
- Programming
- Self-Diagnostic System
- Diagnostic Tests
- Notes
- DTC B1000: Ecu Malfunction
- DTC B1004: Keep Alive Memory (KAM)
- DTC B1007: EEPROM Write Error
- DTC B1009: EEPROM Checksum Error
- DTC B1013: ROM Checksum Error
- DTC B1014: Program ROM Checksum Error
- DTC B1327: Device Power Circuit Low
- DTC B1328: Device Power Circuit High
- DTC B1390: Battery Voltage Sense Failure
- DTC B1422: Device Power MODING Malfunction
- DTC B1656: EEPROM Write Error
- DTC B1658: EEPROM Checksum Error
- DTC U1000 & DTC U1255: Class 2 Communication Malfunction
- DTC U1001-U1254 Loss Of Communications With XXX
- DTC U1300: Class 2 Short To Ground
- DTC U1301: Class 2 Short To Battery
- Removal & Installation
- Notes
- Cellular Telephone Module
- Dash Integration Module
- Door Module
- Electronic Suspension Control Module
- Electronic Brake Control Module
- Instrument Panel Module
- Powertrain Control Module
- Navigation Data Processor
- Navigation Display Module
- Radio
- Rear A/C-Heater Control Panel
- Rear Integration Module
- Remote Function Actuator Module
- Sensing & Diagnostic Module
- Steering Column Module
- Theft Deterrent Module
- Vehicle Communication Unit/Vehicle Interface Unit
- Wiring Diagrams
Factory Service Tools
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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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