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.
2000 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE
Body Control Modules
- Description & Operation
- Component Locations
- Programming
- Self-Diagnostic System
- Diagnostic Tests
- Notes
- DTC B1000: Ecu Malfunction
- DTC B1004: Keep Alive Memory (KAM)
- DTC B1013: Calibration ROM Checksum Error
- DTC B1334: Device Power No. 2 (Low Current) Circuit Open
- DTC B1339: Device Power No. 3 Circuit Open
- DTC B1349: Device Ground No. 1 (Chassis Ground No. 1) Circuit Open
- DTC B1440: Power Mode Master Input Circuit Mismatch
- DTC B1477: Retained Accessory Power Circuit Low
- DTC B1478: Retained Accessory Power Circuit High
- DTC B1482: Battery Rundown Protection Circuit Low
- DTC B1483: Battery Rundown Protection Circuit High
- DTC B1507: High Power Control Circuit Low
- DTC B1508: High Power Control Circuit High
- DTC U1300: Class 2 Data Link Shorted To Ground
- DTC U1301: Class 2 Data Link Shorted To Power
- DTC U1305: Class 2 Data Link Shorted To Ground/Power
- Removal & Installation
- Wiring Diagrams
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.
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