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.
2001 Cadillac Seville SLSFACTORY OEM SERVICE PROCEDURE
Body Control Module DTCS
BODY CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Perform Test |
|---|---|---|
| B1000 | Control Module Malfunction | DTC B1000 |
| B1004 | Keep Alive Memory | DTC B1004 |
| B1007 | EEPROM Write Error | DTC B1007 |
| B1009 | EEPROM Checksum Error | DTC B1009 |
| B1245 | Radio Detects Loss Of E&C Communications | DTC B1245 |
| B1390 | Device Voltage Reference Input Circuit Malfunction | DTC B1390 |
| B1556 | Odometer Mileage Within EEPROM Disagree | DTC B1556 |
| B1652 | Loss Of Keep Alive Memory | DTC B1652 |
| B1656 | EEPROM Write Error | DTC B1656 |
| B1658 | EEPROM Checksum Error | DTC B1658 |
| B1805 | Ignition Switch Circuit Malfunction | DTC B1805 |
| U1000 & U1255 | Class 2 Communication Malfunction | DTC U1000 & U1255 |
| U1001-U1254 | Loss Of XXX Communication | DTC U1001-U1254 |
| U1161-U1163 Or U1170 | Driver's Door Module Communication Malfunction | DTC U1161-U1163 OR U1170 |
| U1300 | Class 2 Short To Ground | DTC U1300 |
| U1301 | Class 2 Short To Voltage | DTC U1301 |
| U1305 | Loss Of Class 2 Serial Data Communication | DTC U1305 |
| U1500 | OnStar® Serial Data Circuit Failure | DTC U1500 |
| U1713 Or U1715 | Window Sensor High Speed Communication Circuit Failure | DTC U1713 OR U1715 |
| U1714 Or U1716 | Driver's Door Module Communication Failure | DTC U1714 OR U1716 |
| U2150 | Loss Of Communication With Navigation Processor | DTC U2150 |
| U2151 | Navigation Display Serial Data High/Low Circuit | DTC U2151 |
| U2153 | Navigation Module Internal Failure | DTC U2153 |
Factory Service Tools
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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.