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 X1 (LWN)
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
K20 Engine Control Module X1 (LWN)
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION K20 Engine Control Module X1 (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 | 13579752 | J-35616-4A (PU) | J-38125-36 | Not Available | Not Available | Not Available | Not Available |
| II | 13584448 | J-35616-64B (LT BU) | J-38125-12A | 1719532-5 | Lear 7 | J | J |
| III | 13584530 | J-35616-4A (PU) | J-38125-36 | 4-964273-1 | Yazaki 15 | C | 5 |
| IV | 19369848 | J-35616-64B (LT BU) | J-38125-12A | Not Available | Not Available | Not Available | Not Available |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 2.5 | VT/GY | 1439 | Run/Crank Ignition 1 Voltage | III | - |
| 2 | 0.5 | VT/BU | 5291 | Powertrain Main Relay Fused Supply 2 | I | - |
| 3 | 0.5 | VT/BU | 5292 | Powertrain Main Relay Fused Supply 3 | I | - |
| 4 | 0.5 | RD/BN | 440 | Battery Positive Voltage | I | - |
| 5 | 6 | RD/YE | 2 | Battery Positive Voltage | IV | - |
| 6 | 6 | BK/WH | 451 | Signal Ground | IV | - |
| 7 | 0.5 | VT/YE | 5985 | Accessory Wakeup Serial Data | II | - |
| 8 - 10 | - | - | - | Not Occupied | - | - |
| 11 | 0.5 | BU/YE | 6861 | Water In Fuel Sensor Signal | II | - |
| 12 | - | - | - | Not Occupied | - | - |
| 13 | 0.5 | WH/RD | 1164 | Accelerator Pedal Position 5V Reference 1 | II | - |
| 14 | 0.5 | BN/RD | 1274 | Accelerator Pedal Position 5V Reference 2 | II | - |
| 15 | 0.5 | GN/WH | 1162 | Accelerator Pedal Position Signal 2 | II | - |
| 16 | 0.5 | BK/VT | 1272 | Accelerator Pedal Position Low Reference 2 | II | - |
| 17 | 0.5 | WH/BK | 2366 | Cooling Fan Control Relay Speed Signal | II | - |
| 18 | 0.5 | BN/WH | 419 | Check Engine Indicator Control | II | - |
| 19 | 0.5 | GN/BN | 507 | Wait To Start Indicator Control | II | - |
| 20 | - | - | - | Not Occupied | - | - |
| 21 | 0.5 | YE | 2928 | Fuel Metering Valve High Control | II | - |
| 22 | 0.5 | VT/GN | 439 | Run/Crank Ignition 1 Voltage | II | - |
| 23 | 0.5 | WH/BU | 6311 | Cruise/ETC/TCC Brake Signal | II | - |
| 24 | 0.5 | WH/GY | 1786 | Transmission Park/Neutral Signal 1 | II | - |
| 25 | 0.5 | GN/WH | 492 | Mass Air Flow Sensor Signal | II | - |
| 26 | 0.5 | BU/VT | 2364 | Cooling Fan Speed Signal | II | - |
| 27 | 0.5 | BK/BU | 1271 | Accelerator Pedal Position Low Reference 1 | II | - |
| 28 | 0.5 | YE/WH | 1161 | Accelerator Pedal Position Signal 1 | II | - |
| 29 - 32 | - | - | - | Not Occupied | - | - |
| 33 | 0.5 | WH/GY | 459 | A/C Compressor Clutch Relay Control | II | - |
| 34 - 35 | - | - | - | Not Occupied | - | - |
| 36 | 0.5 | BN/BK | 2929 | Fuel Metering Valve Low Control | II | - |
| 37 - 38 | - | - | - | Not Occupied | - | - |
| 39 | 0.5 | WH | 7494 | High Speed GMLAN Serial Data (-)3 | II | - |
| 40 | 0.5 | WH | 2501 | High Speed GMLAN Serial Data (-) 1 | II | - |
| 41 - 42 | - | - | - | Not Occupied | - | - |
| 43 | 0.5 | BK/BN | 5360 | Brake Apply Sensor Low Reference | II | - |
| 44 | 0.5 | WH | 5359 | Brake Apply Sensor Control | II | - |
| 45 | 0.5 | WH/BU | 6289 | Induction Air Temperature Sensor Signal | II | - |
| 46 | 0.5 | BN/RD | 2700 | A/C Pressure Sensor 5V Reference | II | - |
| 47 | 0.5 | GN | 380 | A/C Refrigerant Pressure Sensor Signal | II | - |
| 48 | 0.5 | BK/BN | 5514 | A/C Refrigerant Pressure Sensor Low Reference | II | - |
| 49 | - | - | - | Not Occupied | - | - |
| 50 | 0.5 | GN/GY | 465 | Fuel Pump Primary Relay Control | II | - |
| 51 | 0.5 | YE | 5991 | Powertrain Relay Coil Control | II | - |
| 52 - 53 | - | - | - | Not Occupied | - | - |
| 54 | 0.5 | BU/BK | 7493 | High Speed GMLAN Serial Data (+)3 | II | - |
| 55 | 0.5 | BU | 2500 | High Speed GMLAN Serial Data (+) 1 | II | - |
| 56 - 58 | - | - | - | Not Occupied | - | - |
| 59 | 0.5 | BU/YE | 5361 | Brake Apply Sensor Signal | II | - |
| 60 | 0.5 | BK/VT | 2760 | Intake Air Temperature Sensor Low Reference | II | - |
| 61 - 63 | - | - | - | Not Occupied | - | - |
| 64 | 0.75 | VT/BN | 2927 | Hydrocarbon Injector Low Control | II | - |
| 65 | - | - | - | Not Occupied | - | - |
| 66 | 0.5 | YE/BK | 625 | Starter Enable Relay Control | II | - |
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.