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 Module DTCS
BODY CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Circuit Affected | ||
|---|---|---|---|
| B1552 | Loss Of BCM Keep Alive Memory (KAM) | ||
| B1556 | BCM EPROM Write Error | ||
| B1558 | BCM EPROM Checksum Error | ||
| B1970 | Exterior Light Power Fault | ||
| B1971 | Inadvertent Power Fault | ||
| B1972 | Low Power Control Fault | ||
| B1973 | High Power Control Fault | ||
| B1981 | Battery Voltage Too Low | ||
| B1982 | Device Power 1 Circuit High | ||
| B1983 | Device Power 1 Circuit Low | ||
| B2470 | Daytime Running Lights Fault | ||
| B2471 | Interior Lights Fault | ||
| B2472 | Low Beam Fault | ||
| B2473 | High Beam Fault | ||
| B2476 | Parking Lights Fault | ||
| B2477 | Reverse Light Relay Shorted To Ground | ||
| B2478 | Reverse Light Relay Shorted To Battery | ||
| B2502 | Park Relay (BTSI) Shorted To Ground | ||
| B2503 | Park Relay (BTSI) Shorted To Battery | ||
| B2550 | Storage Mode Entered | ||
| B2719 | CTD-Trunk Tamper Switch Fault | ||
| U1016 (1) | Loss Of Communication With PCM | ||
| U1088 (1) | Loss Of Communication With SDM | ||
| U1096 (1) | Loss Of Communication With IPC | ||
| U1128 (1) | Loss Of Communication With IRC | ||
| U1153 (1) | Loss Of Communication With CCP | ||
| U1255 (1) | Class 2 Initialization Error | ||
| U1300 | Class 2 Short To Ground | ||
| U1301 | Class 2 Short To Battery | ||
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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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