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.
2002 Cadillac Eldorado ECSFACTORY OEM SERVICE PROCEDURE
Body Control Module DTCS
BODY CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1000 | Module Internal Malfunction |
| DTC B1007 | EEPROM Error |
| DTC B1009 | EEPROM Check Sum Error |
| DTC B1552 | Keep Alive Memory (KAM) Has Been Reset |
| DTC B1556 | Data Write Error |
| DTC B1558 | Checksum Error |
| DTC B1656 | EEPROM Error |
| DTC B1658 | Check Sum Error |
| DTC B1972 | Battery Positive Voltage Output Circuit Grounded |
| DTC B1973 | CONTROLLED POWER Relay Coil Control Circuit Short To Voltage |
| DTC B2550 | Storage Mode Is Entered |
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.