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.
1997 Cadillac CateraFACTORY OEM SERVICE PROCEDURE
Body Control Module DTCS
BODY CONTROL MODULE DTCS
| DTC | Description |
|---|---|
| B1552 | LOSS OF BCM KEEP ALIVE MEMORY (KAM) |
| B1556 | BCM EEPROM WRITE ERROR |
| B1558 | BCM EEPROM CHECKSUM ERROR |
| B1970 | EXTERIOR LIGHT POWER FAULT |
| B1971 | INADVERTENT POWER FAULT |
| B1972 | LOW POWER DRIVER FAULT |
| B1973 | HIGH POWER CONTROL FAULT |
| B1982 | BATTERY VOLTAGE TOO HIGH |
| B1983 | BATTERY VOLTAGE TOO LOW |
| B2470 | DAYTIME RUNNING LIGHTS FAULT |
| B2471 | INTERIOR LIGHTS FAULT |
| B2472 | LOW BEAM OUTPUT FAULT |
| B2473 | HIGH BEAM FAULT |
| B2476 | PARKING LIGHTS OUTPUT FAULT |
| U1128 | LOSS OF SERIAL COMMUNICATIONS - IRC |
| U1176 | LOSS OF SERIAL COMMUNICATIONS - RKE |
| U1255 | GENERIC LOSS OF CLASS 2 DEVICES |
| U1300 | CLASS 2 SHORT TO GROUND |
| U1301 | CLASS 2 SHORT TO BATTERY |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.