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 MANUALSCHEVROLET2000CAVALIER BASE, 2D COUPE, AUTOMATIC, 4T40E/MN4REPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXBODY CONTROL MODULE DTCS
2000 Chevrolet Cavalier Base, 2D Coupe, Automatic, 4T40E/MN4
Body Control Module DTCS
2000 Chevrolet Cavalier Base, 2D Coupe, Automatic, 4T40E/MN4SECTION Body Control Module DTCS
BODY CONTROL MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | ||
|---|---|---|---|
| B1000 | BCM Malfunction | ||
| B1001 | Option Configuration Error | ||
| B1372 | Ignition 1 Circuit Low | ||
| B1382 | Ignition ACC Circuit Low | ||
| B2965 | Key In Ignition Fault | ||
| U1000 & U1255 | Class 2 Communication Malfunction | ||
| U1001- U1254 | (1) Loss Of Communications With XXX | ||
| U1300 | (1) Class 2 Data Link Low | ||
| U1301 | (1) Class 2 Data Link High | ||
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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.