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 MANUALSBUICK2000CENTURY CUSTOMREPAIR AND DIAGNOSISBODY & FRAMEBODY, CAB CONTROL SYSTEMSBODY CONTROL MODULES
2000 Buick Century Custom
Body Control Modules
2000 Buick Century CustomSECTION Body Control Modules
- Description & Operation
- Component Locations
- Programming
- Trouble Shooting
- Self-Diagnostic System
- Notes
- Body Control Module (BCM) Diagnostic System Check
- Abs Diagnostic System Check
- Body Rear End Diagnostic System Check
- Lighting System Diagnostic System Check
- Retained Accessory Power (Rap) Diagnostic System Check
- Tire Inflation Monitoring Diagnostic System Check
- Clearing Diagnostic Trouble Codes
- Scan Tool Does Not Communicate With Class 2 Device
- Scan Tool Does Not Power Up
- Diagnostic Tests
- Notes
- DTC B1000: Ecu Malfunction In Body Control Systems
- DTC B1013: Calibration ROM Checksum Error
- DTC B1015: VIN Information Error
- DTC B1334: Device Power No. 2 (Low Current #2) Circuit Open
- DTC B1339: Device Power No. 3 Circuit Open
- DTC B1354: Device Ground No. 2 (Chassis Ground No. 2) Circuit Open
- DTC B1422: Device Power MODING Malfunction
- DTC B1477: Retained Accessory Power (Rap) Circuit Low
- DTC B1478: Retained Accessory Power Circuit High
- DTC B1482: Inadvertent Power Short To Ground
- DTC B2533: Front Fog Lamps Control Circuit High
- DTC B2552: Backup Lamps Control Circuit Low (Regal Only)
- DTC B2553: Backup Lamps Control Circuit High (Regal Only)
- DTC B2559: Courtesy Lamps Ground Open
- DTC B2577: Headlamp Control Circuit Low
- DTC B2578: Headlamp Control Circuit High
- DTC 2587: Park Lamp Control Circuit Low
- DTC B2588: Park Lamp Control Circuit High
- DTC B2603: DRL Control #1 Circuit High
- DTC B2608: DRL Control #2 Circuit High
- DTC B2617: Passenger Compartment Dimming #2 Circuit Low
- DTC B2618: Passenger Compartment Dimming #2 Circuit High
- DTC B2647: Ambient Light Sensor Circuit Low
- DTC B2648: Ambient Light Sensor Circuit High
- DTC B2747: Traction Control Switch Circuit Low
- DTC B2818: Low Tire Pressure System Reset Circuit Low
- DTC B3267: DECKLID Relay Output Short To Ground/Open
- DTC B3268: DECKLID Relay Output Short To Battery
- DTC U1000 & DTC U1255: Class 2 Communication Malfunction
- DTC U1001-U1254: Loss Of XXX Communications
- DTC U1300: Class 2 Circuit (Short To Ground)
- DTC U1301: Class 2 Circuit (Short To Voltage)
- Symptom Tests
- Removal & Installation
- Wiring Diagrams
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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.