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 MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN PASSENGER EXTENDED, 5.0 MREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 771 (ANTILOCK BRAKE SYSTEM)
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 M
Section 771 (Antilock Brake System)
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 MSECTION Section 771 (Antilock Brake System)
WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Antilock Brake System
- Diagnostic System Check - ABS
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC) List
- Enhanced Diagnostics
- DTC B2747: TCS Switch Signal Circuit Malfunction
- DTC C1214: System Relay Contact or Coil Circuit Open
- DTC C1216: Brake Control Relay Coil Circuit Open
- DTC C1217: Pump Motor Shorted to Ground
- DTC C1218: Pump Motor Circuit Shorted to Voltage or Motor Ground Open
- DTC C1221, C1222, C1223, C1224, C1225, C1226, C1227, C1228, C1232, C1233, C1234, C1235: Wheel Speed Sensor Fault
- DTC C1236: Low System Supply Voltage
- DTC 1237: High System Supply Voltage
- DTC C1238: Brake Thermal Model Exceeded
- DTC C1242, C1243: Pump Motor Circuit Open & BPMV Pump Motor Stalled
- DTC C1248: EBCM Turned the Red Brake Warning Indicator On
- DTC C1254: Abnormal Shutdown Detected
- DTC C1255, C1256: EBCM Internal Malfunction
- DTC C1261, C1262, C1263, C1264, C1265, C1266, C1267, C1268, C1271, C1272, C1273, C1274: Valve Solenoid Malfunction
- DTC C1275: PCM Requested ETS to Be Disabled
- DTC C1276, P1644, P1689: Delivered Torque Signal Circuit Malfunction & Traction Control Delivered Torque Output Circuit
- DTC C1277, P1571: Requested Torque Signal Circuit Malfunction & Traction Control Torque Request Circuit
- DTC C1278: TCS Temporarily Inhibited By PCM
- DTC C1291: Open Brake Lamp Switch Contacts During Deceleration
- DTC C1294: Brake Lamp Switch Circuit Always Active
- DTC C1295: Brake Lamp Switch Circuit Open
- Symptoms - Antilock Brake System
- ABS Indicator Always On
- ABS Indicator Inoperative
- Low Traction Indicator Always On
- Low Traction Indicator Inoperative
- Traction Off Indicator Always On
- Traction Off Indicator Inoperative
- Repair Instructions
- Description and Operation
- Special Tools and Equipment
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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.