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 CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESBODY CONTROL MODULESDIAGNOSTIC TROUBLE CODE DEFINITIONS
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8
Diagnostic Trouble Code Definitions
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Diagnostic Trouble Code Definitions
BODY CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE DEFINITIONS
| DTC | Description | Perform Test | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B0016 | Right Front/Passenger Frontal Deployment Loop (Single Stage Or Stage 1) Resistance Low | (1) | ||||||||||||||||
| B0017 | Right Front/Passenger Frontal Deployment Loop (Single Stage Or Stage 1) Open | (1) | ||||||||||||||||
| B0018 | Right Front/Passenger Frontal Deployment Loop (Single Stage Or Stage 1) Short To Ground/Voltage Out Of Range | (1) | ||||||||||||||||
| B0022 | Left Front/Driver Frontal Deployment Loop (Single Stage Or Stage 1) Resistance Low | (1) | ||||||||||||||||
| B0024 | Left Front/Driver Frontal Deployment Loop (Single Stage Or Stage 1) Short To Ground/Voltage Out Of Range | (1) | ||||||||||||||||
| B0026 | Left Front/Driver Frontal Deployment Loop (Single Stage Or Stage 1) Open | (1) | ||||||||||||||||
| B0035 | Front End Discriminating Sensor Signal Low | (1) | ||||||||||||||||
| B0036 | Front End Discriminating Sensor Signal High | (1) | ||||||||||||||||
| B0041 | Left Front/Driver Side Deployment Loop Open | (1) | ||||||||||||||||
| B0051 | Deployment Commanded | (1) | ||||||||||||||||
| B0053 | Deployment Commanded With Loop Malfunctions Present | (1) | ||||||||||||||||
| B0688 | Security Indicator Circuit Fault | B0688 | ||||||||||||||||
| B1000 | Module Malfunction | B1000 | ||||||||||||||||
| B1001 | Vehicle Identification Number (VIN) Mismatch | (1) | ||||||||||||||||
| B1004 | Keep Alive Memory Data Lost | B1004 | ||||||||||||||||
| B1007 | Checksum Value Error | DTC B1007 | ||||||||||||||||
| B1009 | EEPROM Value Error | B1009 | ||||||||||||||||
| B2947 | Passlock(tm) Sensor Power Circuit Low | (2) | ||||||||||||||||
| B2948 | Passlock(tm) Sensor Power Circuit High | (2) | ||||||||||||||||
| B2957 | Passlock(tm) Sensor Data Circuit Low | (2) | ||||||||||||||||
| B2958 | Passlock(tm) Sensor Data Circuit High | (2) | ||||||||||||||||
| B2960 | Passlock(tm) Sensor Data Incorrect But Valid | (2) | ||||||||||||||||
| B3031 | Security System Controller in Learn Mode | (2) | ||||||||||||||||
| B3033 | Security System Indicates Tamper | (2) | ||||||||||||||||
| C0221-C0227 | Wheel Speed Sensor Malfunction | (3) | ||||||||||||||||
| C0229 | Front Wheel Speed Sensor Signals Erratic | (3) | ||||||||||||||||
| C0235-C0237 Or P1504 | Vehicle Speed Sensor Signal Conversion Fault | (3) | ||||||||||||||||
| C0238 | Wheel Speed Input Variation Error | (3) | ||||||||||||||||
| C0241-C0254 | Electronic Brake Control Module Internal Fault | (3) | ||||||||||||||||
| C0265 Or C0266 | Electronic Brake Control Module Internal Fault | (3) | ||||||||||||||||
| C0267 & C0268 | Brake System Pump Circuit Fault | (3) | ||||||||||||||||
| C0269 & C0274 | Brake System Solenoid Valve Fault | (3) | ||||||||||||||||
| C0271-C0273 | Electronic Brake Control Module Internal Fault | (3) | ||||||||||||||||
| C0281 | Brake Switch Open/Short | (3) | ||||||||||||||||
| C0286 | ABS Indicator Failure Control Circuit Low | (3) | ||||||||||||||||
| C0288 | Pressure Differential Sensor Signal Circuit High | (3) | ||||||||||||||||
| C0559 | Passlock(tm) Module Internal Memory Failure | (2) | ||||||||||||||||
| PXXXX | Powertrain Control Module Fault | (4) | ||||||||||||||||
| P0218 | Transmission Fluid Overtemperature | (5) | ||||||||||||||||
| P0461 | No Fuel Level Sensor Signal Variation | (6) | ||||||||||||||||
| P0462 | Fuel Level Voltage Signal Voltage Low | (6) | ||||||||||||||||
| P0463 | Fuel Level Voltage Signal Voltage High | (6) | ||||||||||||||||
| P0502 | VSS Circuit - Low Input | (5) | ||||||||||||||||
| P0503 | VSS Circuit - Intermittent | (5) | ||||||||||||||||
| P0560 | System Voltage - High/Low | (5) | ||||||||||||||||
| P0567 | Resume/Accel Switch Circuit | (7) | ||||||||||||||||
| P0568 | Set/Coast Switch Circuit | (7) | ||||||||||||||||
| P0571 | TCC/Brake Switch Circuit | (7) | ||||||||||||||||
| P0608 | Vehicle Speed Signal Mismatch | (6) | ||||||||||||||||
| P0711 | TFT Sensor Circuit - Range/Performance | (5) | ||||||||||||||||
| P0712 | TFT Sensor Circuit - Low Input | (5) | ||||||||||||||||
| P0713 | TFT Sensor Circuit - High Input | (5) | ||||||||||||||||
| P0716 | ISS Sensor Circuit - Intermittent | (5) | ||||||||||||||||
| P0717 | ISS Sensor Circuit - Low Input | (5) | ||||||||||||||||
| P0719 | Brake Switch Circuit - Low Input | (5) | ||||||||||||||||
| P0722 | OSS Sensor Circuit - Low Input | (5) | ||||||||||||||||
| P0723 | OSS Sensor Circuit - Intermittent | (5) | ||||||||||||||||
| P0724 | Brake Switch Circuit - High Input | (5) | ||||||||||||||||
| P0730 | Incorrect Gear Ratio | (5) | ||||||||||||||||
| P0740 | TCC Enable Solenoid Circuit - Electrical Malfunction | (5) | ||||||||||||||||
| P0741 | TCC System - Stuck Off | (5) | ||||||||||||||||
| P0742 | TCC System - Stuck On | (5) | ||||||||||||||||
| P0748 | PC Solenoid Circuit - Electrical Malfunction | (5) | ||||||||||||||||
| P0751 | 1-2 Shift Solenoid Valve Performance - No 1st Or 4th Gear | (5) | ||||||||||||||||
| P0752 | 1-2 Shift Solenoid Valve Performance - No 2nd Or 3rd Gear | (5) | ||||||||||||||||
| P0753 | 1-2 Shift Solenoid Circuit - Electrical Malfunction | (5) | ||||||||||||||||
| P0756 | 2-3 Shift Solenoid Valve Performance | (5) | ||||||||||||||||
| P0757 | 2-3 Shift Solenoid Valve Performance - No 3rd Or 4th Gear | (5) | ||||||||||||||||
| P0757 | 2-3 Shift Solenoid Valve Performance - No 3rd Or 4th Gear | (5) | ||||||||||||||||
| P0758 | 2-3 Shift Solenoid Valve Circuit - Electrical Malfunction | (5) | ||||||||||||||||
| P0785 | 3-2 Shift Solenoid Circuit - Electrical Malfunction | (5) | ||||||||||||||||
| P1626 | Powertrain Control Module Unable To Learn Passlock(tm) Module Password | (2) | ||||||||||||||||
| P1630 | Powertrain Control Module Unable To Learn Passlock(tm) Module Password | (2) | ||||||||||||||||
| P1631 | Invalid Password Received | (2) | ||||||||||||||||
| P1665 | Fuel Level Signal Circuit Malfunction | (6) | ||||||||||||||||
| P1810 | TFP Manual Valve Position Switch - Circuit Malfunction | (5) | ||||||||||||||||
| P1811 | Maximum Adapt & Long Shift | (5) | ||||||||||||||||
| P1860 | TCC PWM Solenoid Circuit - Electrical Malfunction | (5) | ||||||||||||||||
| P1870 | Transmission Component Slipping | (5) | ||||||||||||||||
| P1875 | 4WD Low Switch Circuit - Electrical Malfunction | (5) | ||||||||||||||||
| U1000 & U1255 | Class 2 Communication Malfunction | (8) | ||||||||||||||||
| U1001-U1254 | Loss of XXX Communications | (8) | ||||||||||||||||
| U1300 | Class 2 Data Link Low | (8) | ||||||||||||||||
| U1301 | Class 2 Data Link High | (8) | ||||||||||||||||
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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.