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 MANUALSCHEVROLET2019EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 20 (COMPONENT CONNECTOR END VIEWS (K17-K71))COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X3 (LWN)
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
K20 Engine Control Module X3 (LWN)
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION K20 Engine Control Module X3 (LWN)
WARNING: This page is about a different car, the 2018 GMC Savana 3500, 2018 GMC Savana 2500, 2018 Chevrolet Express 3500, and 2018 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
Connector Part Information
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Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray Name | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | 13575812 | J-35616-64B (LT BU) | J-38125-213 | Not Available | Not Available | Not Available | Not Available |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.5 | BN/WH | 3100 | DEF Dosing Valve Low Control | I | - |
| 2 | - | - | - | Not Occupied | - | - |
| 3 | 0.5 | BK/GN | 6281 | Fuel Level Sensor Low Reference | I | - |
| 4 - 5 | - | - | - | Not Occupied | - | - |
| 6 | 0.5 | YE/WH | 3200 | Throttle Inlet Absolute Pressure Sensor Signal | I | - |
| 7 | 0.5 | WH/RD | 3201 | Throttle Inlet Absolute Pressure Sensor 5V Reference | I | - |
| 8 | 0.5 | BK/YE | 407 | Sensor Low Reference | I | - |
| 9 | 0.5 | BK/VT | 3661 | Exhaust Gas Temperature Sensor 5 Low Reference | I | - |
| 10 | 0.5 | BK/BU | 6274 | Exhaust Gas Recirculation Temperature Sensor Low Reference | I | - |
| 11 | 0.5 | BK/GY | 3659 | Exhaust Gas Temperature Sensor 4 Low Reference | I | - |
| 12 | 0.5 | BK/GN | 3657 | Exhaust Gas Temperature Sensor 3 Low Reference | I | - |
| 13 | 0.5 | BK/BU | 6783 | Exhaust Gas Temperature Sensor 2 Low Reference | I | - |
| 14 | 0.5 | BU/WH | 5277 | Exhaust Gas Temperature Sensor 1 | I | - |
| 15 | 0.5 | BN | 3099 | DEF Dosing Valve High Control | I | - |
| 16 - 17 | - | - | - | Not Occupied | - | - |
| 18 | 0.5 | BU/VT | 1589 | Primary Fuel Level Sensor Signal | I | - |
| 19 | 0.5 | BK/YE | 6275 | Exhaust Gas Recirculation Temperature Sensor 2 Low Reference | I | - |
| 20 | 0.5 | YE/GN | 3236 | Exhaust Gas Recirculation Temperature Sensor 2 Signal | I | - |
| 21 | 0.5 | GY/RD | 5928 | Variable Nozzle Turbo Position Sensor 5V Reference | I | - |
| 22 | 0.5 | GN/BK | 735 | Outside Ambient Air Temperature Sensor Signal | I | - |
| 23 | 0.5 | BU/GY | 3660 | Exhaust Gas Temperature Sensor 5 Signal | I | - |
| 24 | 0.5 | WH/BN | 3237 | Exhaust Gas Recirculation Temperature Sensor Signal | I | - |
| 25 | 0.5 | VT/BN | 3658 | Exhaust Gas Temperature Sensor 4 Signal | I | - |
| 26 | 0.5 | GY/GN | 5378 | Exhaust Gas Temperature Sensor 3 | I | - |
| 27 | 0.5 | BK/BN | 6782 | Exhaust Gas Temperature Sensor 1 Low Reference | I | - |
| 28 | 0.5 | BU/GN | 5377 | Exhaust Gas Temperature Sensor 2 | I | - |
| 29 | - | - | - | Not Occupied | - | - |
| 30 | 0.5 | YE/BU | 1497 | Crankcase Ventilation (Blowby) Heater Control Signal | I | - |
| 31 | - | - | - | Not Occupied | - | - |
| 32 | 0.5 | BN/GY | 4008 | Humidity Sensor Signal | I | - |
| 33 | 0.5 | BK/BN | 5929 | Variable Nozzle Turbo Position Sensor Low Reference | I | - |
| 34 - 42 | - | - | - | Not Occupied | - | - |
| 43 | 0.5 | GN/BU | 3889 | DEF Power Module Relay Control | I | - |
| 44 | - | - | - | Not Occupied | - | - |
| 45 | 0.5 | BU | 3017 | Fuel Heater Relay Control 1 | I | - |
| 46 | 0.5 | VT/YE | 5947 | Variable Nozzle Turbo Position Sensor Signal | I | - |
| 47 - 49 | - | - | - | Not Occupied | - | - |
| 50 | 0.5 | WH/RD | 6054 | Exhaust Pressure Sensor 5V Reference 1 | I | - |
| 51 | 0.5 | BU | 6053 | Exhaust Pressure Sensor Signal 1 | I | - |
| 52 | 0.5 | BK/YE | 6055 | Exhaust Pressure Sensor Low Reference 1 | I | - |
| 53 - 56 | - | - | - | Not Occupied | - | - |
RENDER: 1.0x
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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.