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 Eldorado ESCFACTORY OEM SERVICE PROCEDURE
Body Control Modules
- Description
- Operation
- Component Locations
- Self-Diagnostic System
- Diagnostic Tests
- Notes
- DTC B1552: Loss Of BCM Keep Alive Memory (KAM)
- DTC B1556: BCM EPROM Write Error
- DTC B1558: BCM EPROM Checksum Error
- DTC B1970: Exterior Light Power Fault
- DTC B1971: Inadvertent Power Fault
- DTC B1972: Low Power Control Fault
- DTC B1973: High Power Control Fault
- DTC B1981: Battery Voltage Too Low
- DTC B1982: Device Power 1 Circuit High
- DTC B1983: Device Power 1 Circuit Low
- DTC B2470: Daytime Running Lights Fault
- DTC B2471: Interior Lights Fault
- DTC B2472: Low Beam Fault
- DTC B2473: High Beam Fault
- DTC B2476: Parking Lights Fault
- DTC B2477: Reverse Light Relay Shorted To Ground
- DTC B2478: Reverse Light Relay Shorted To Battery
- DTC B2502: Park Relay (BTSI) Shorted To Ground
- DTC B2503: Park Relay (BTSI) Shorted To Battery
- DTC B2550: Storage Mode Entered
- DTC B2719: CTD-Trunk Tamper Switch Fault
- DTC U1000 & U1255: Class 2 Communication Malfunction
- DTC U1001-U1254: Loss Of XXX Communications
- DTC U1300: Class 2 Short To Ground
- DTC U1301: Class 2 Short To Battery
- Removal & Installation
- Wiring Diagrams
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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