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.
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HOMESERVICE MANUALSCADILLAC1997SEVILLE SLSREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEBODY, CAB CONTROL SYSTEMSBODY CONTROL MODULEDIAGNOSTIC PARAMETERSBCM DTC DEFINITION
1997 Cadillac Seville SLS
BCM DTC Definition
1997 Cadillac Seville SLSSECTION BCM DTC Definition
BCM COMMUNICATION PROBLEMS
| Affected System | Perform Test |
|---|---|
| Class 2 Serial Data Line | Class 2 Serial Data Line System Check |
| Scan Tool Communications | Chart A, Scan Tool Will Not Communicate |
BCM DTC DEFINITION
| Code No. | Circuit Affected |
|---|---|
| U1016 | Loss Of Serial Communications - PCM |
| U1088 | Loss Of Serial Communications - SIR |
| U1096 | Loss Of Serial Communications - IPC |
| U1153 | Loss Of Serial Communications - CCP |
| U1169 | Loss Of Serial Communications - MMM |
| U1255 | Class 2 Initialization Error |
| U1300 | Class 2 Short To Ground |
| U1301 | Class 2 Short To Voltage |
| B0532 | Fuel Level Sender Short To Ground |
| B0533 | Fuel Level Sender Short To Voltage |
| B1552 | Loss Of PZM Keep Alive Memory (KAM) |
| B1556 | PZM EEPROM Write Error |
| B1558 | PZM EEPROM 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 | Battery Voltage Too High |
| B1983 | Source Voltage Too Low |
| B2470 | Daytime Running Lights Fault |
| B2471 | Interior Lights Fault |
| B2472 | Low Beam Output Fault |
| B2473 | High Beam Output Fault |
| B2476 | Parking Lights Output Fault |
| B2477 | Reverse Relay Shorted To Ground |
| B2478 | Reverse Relay Shorted To Voltage |
| B2502 | Park Relay (BTSI) Shorted To Ground |
| B2503 | Park Relay (BTSI) Shorted To Voltage |
| B2550 | Storage Mode Entered |
| B2719 | UTD - Trunk Tamper Switch Fault |
RENDER: 1.0x
NO RELATED
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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.