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 Chevrolet Malibu BaseFACTORY OEM SERVICE PROCEDURE
Body Control Module DTCS
BODY CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1000 | BODY CONTROL MODULE MALFUNCTION |
| DTC B1001 | VEHICLE OPTION CONFIGURATION ERROR (RADIO) |
| DTC B1001 | VEHICLE OPTION CONFIGURATION ERROR (BODY CONTROL MODULE) |
| DTC B1369 | IGNITION 0 FAULT |
| DTC B1374 | IGNITION 1 FAULT |
| DTC B1379 | IGNITION 3 FAULT |
| DTC B1780 | AUDIO SYSTEM THEFT LOCK ENABLED |
| DTC B2532 | FRONT FOGLIGHT RELAY OUTPUT SHORT TO GROUND OR OPEN |
| DTC B2533 | FRONT FOGLIGHT RELAY OUTPUT SHORT TO VOLTAGE |
| DTC B2558 | INTERIOR LIGHT CONTROL OUTPUT SHORT TO VOLTAGE |
| DTC B2575 | HEADLIGHT REQUEST/FEEDBACK MISMATCH |
| DTC B2577 | HEADLIGHT CONTROL CIRCUIT LOW |
| DTC B2578 | HEADLIGHT RELAY OUTPUT SHORT TO VOLTAGE |
| DTC B2585 | PARKING LIGHT SYSTEM FAULT |
| DTC B2587 | PARKING LIGHT RELAY OUTPUT SHORT TO GROUND OR OPEN |
| DTC B2588 | PARKING LIGHT RELAY OUTPUT SHORT TO VOLTAGE |
| DTC B2600 | DAYTIME RUNNING LIGHTS ERROR |
| DTC B2601 | DAYTIME RUNNING LIGHTS REMAIN ON OR SHORT TO GROUND |
| DTC B2602 | DAYTIME RUNNING LIGHTS RELAY CONTROL SHORT TO GROUND |
| DTC B2603 | DAYTIME RUNNING LIGHTS RELAY CONTROL SHORT TO VOLTAGE |
| DTC B2647 | AMBIENT LIGHT SENSOR CIRCUIT LOW |
| DTC B2648 | AMBIENT LIGHT SENSOR CIRCUIT HIGH |
| DTCS U1000 & U1255 | CLASS 2 COMMUNICATION MALFUNCTION |
| DTCS U1001-U1254 | LOSS OF XXX COMMUNICATIONS |
| DTC U1300 | CLASS 2 SERIAL DATA LINK LOW |
| DTC U1301 | CLASS 2 SERIAL DATA LINK HIGH |
| DTCS U2000, U2001, U2002, U2003, U2004, U2005, U2006, U2007 | INVALID DATA OR SERIAL PERIPHERAL INTERFACE SERIAL DATA IN/OUT CIRCUIT VOLTAGE OUT OF RANGE |
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.
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