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 MANUALSCHEVROLET2018SILVERADO 2500 HD WT, 2D PICKUP, 6.0L ENG VIN G, RWD, GASREPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSCOMPONENT CONNECTOR END VIEWS (K20)COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X1 (L8B)
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, Gas
K20 Engine Control Module X1 (L8B)
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, GasSECTION K20 Engine Control Module X1 (L8B)
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 |
| II | 13579770 | J-35616-4A (PU) | J-38125-11A | 7116-4152-02 | Yazaki 9 | A | 5 |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | - | - | - | Not Occupied | - | - |
| 2 | 0.5 | BU/WH | 7446 | Fuel Line Pressure Sensor Signal | I | - |
| 3 | - | - | - | Not Occupied | - | - |
| 4 | 0.5 | YE/WH | 3200 | Throttle Inlet Absolute Pressure Sensor Signal | I | - |
| 5 | 0.5 | WH/RD | 3201 | Throttle Inlet Absolute Pressure Sensor 5V Reference | I | - |
| 6 | 0.5 | GN | 380 | A/C Refrigerant Pressure Sensor Signal | I | - |
| 7 | - | - | - | Not Occupied | - | - |
| 8 | 0.5 | BK/YE | 7447 | Fuel Line Pressure Sensor Low Reference | I | - |
| 9 | 0.5 | BU/WH | 890 | Fuel Tank Pressure Sensor Signal | I | - |
| 10 | 0.5 | YE/RD | 2709 | Fuel Tank Pressure Sensor 5V Reference | I | - |
| 11 - 12 | - | - | - | Not Occupied | - | - |
| 13 | 0.5 | BU/GY | 636 | Outside Ambient Air Temperature Sensor Signal | I | - |
| 14 | 0.5 | WH/RD | 1164 | Accelerator Pedal Position 5V Reference 1 | I | - |
| 15 | 0.5 | YE/WH | 1161 | Accelerator Pedal Position Signal 1 | I | - |
| 16 - 20 | - | - | - | Not Occupied | - | - |
| 21 | 0.5 | BN/RD | 2700 | A/C Pressure Sensor 5V Reference | I | - |
| 22 | 0.5 | BK/BN | 5514 | A/C Refrigerant Pressure Sensor Low Reference | I | - |
| 23 | - | - | - | Not Occupied | - | - |
| 24 | 0.5 | BN/RD | 7445 | Fuel Line Pressure Sensor 5V Reference | I | - |
| 25 | 0.5 | BU/VT | 1589 | Primary Fuel Level Sensor Signal | I | - |
| 26 | 0.5 | BK/GN | 6281 | Fuel Level Sensor Low Reference | I | - |
| 27 - 29 | - | - | - | Not Occupied | - | - |
| 30 | 0.5 | BK/BU | 1271 | Accelerator Pedal Position Low Reference 1 | I | - |
| 31 | - | - | - | Not Occupied | - | - |
| 32 | 0.5 | WH/GY | 459 | A/C Compressor Clutch Relay Control | I | - |
| 33 | 0.5 | BN/RD | 1274 | Accelerator Pedal Position 5V Reference 2 | I | - |
| 34 | 0.5 | GN/WH | 1162 | Accelerator Pedal Position Signal 2 | I | - |
| 35 | - | - | - | Not Occupied | - | - |
| 36 | 0.5 | BU/BK | 7493 | High Speed GMLAN Serial Data (+)3 | I | - |
| 37 | 0.5 | WH | 7494 | High Speed GMLAN Serial Data (-)3 | I | - |
| 38 | 0.5 | WH | 1579 | Fuel Temperature/Composition Signal | I | - |
| 39 | 0.5 | BU | 2500 | High Speed GMLAN Serial Data (+) 1 | I | - |
| 40 | 0.5 | WH | 2501 | High Speed GMLAN Serial Data (-) 1 | I | - |
| 41 | 0.5 | BU/WH | 2918 | Fuel Rail Pressure Sensor Signal | I | - |
| 42 - 43 | - | - | - | Not Occupied | - | - |
| 44 | 0.5 | GY | 5660 | Fuel Pump Controller Data Out Signal | I | - |
| 45 | - | - | - | Not Occupied | - | - |
| 46 | 0.5 | BN/WH | 419 | Check Engine Indicator Control | I | - |
| 47 - 50 | - | - | - | Not Occupied | - | - |
| 51 | 0.5 | VT/GN | 439 | Run/Crank Ignition 1 Voltage | I | - |
| 52 | 0.5 | RD/BN | 440 | Battery Positive Voltage | I | - |
| 53 | 0.5 | BK/VT | 1272 | Accelerator Pedal Position Low Reference 2 | I | - |
| 54 | 0.5 | GN/VT | 4621 | Local Interconnect Network Serial Data Bus 21 | I | - |
| 55 - 56 | - | - | - | Not Occupied | - | - |
| 57 | 0.5 | WH/BU | 6311 | Cruise/ETC/TCC Brake Signal | I | - |
| 58 | - | - | - | Not Occupied | - | - |
| 59 | 0.5 | BN/YE | 473 | High Speed Cooling Fan Relay Control | I | - |
| 60 - 61 | - | - | - | Not Occupied | - | - |
| 62 | 0.75 | VT/BU | 5291 | Powertrain Main Relay Fused Supply 2 | I | - |
| 63 | 0.5 | YE/BK | 625 | Starter Enable Relay Control | I | - |
| 64 - 65 | - | - | - | Not Occupied | - | - |
| 66 | 0.5 | WH | 1310 | EVAP Canister Vent Solenoid Control | I | - |
| 67 | 0.75 | VT/BU | 5292 | Powertrain Main Relay Fused Supply 3 | I | - |
| 68 - 69 | - | - | - | Not Occupied | - | - |
| 70 | 0.5 | VT/YE | 5985 | Accessory Wakeup Serial Data | I | - |
| 71 | - | - | - | Not Occupied | - | - |
| 72 | 0.5 | YE | 5991 | Powertrain Relay Coil Control | I | - |
| 73 | 2.5 | VT/BU | 5290 | Powertrain Main Relay Fused Supply 1 | II | - |
RENDER: 1.0x
NO RELATED
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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.