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 DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSCOMPONENT CONNECTOR END VIEWS (K20 - K85)COMPONENT CONNECTOR END VIEWSK56 SERIAL DATA GATEWAY MODULE X1
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, Gas
K56 Serial Data Gateway Module X1
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, GasSECTION K56 Serial Data Gateway Module X1
Connector Part Information
|
Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray Name | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | 19300660 | 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 | 0.35 | RD/VT | 3340 | Battery Positive Voltage | I | - |
| 2 | - | - | - | Not Occupied | - | - |
| 3 | 0.35 | BU/GN | 1304 | High Speed GMLAN Serial Data (+)9 | I | - |
| 4 | 0.35 | WH/GN | 1305 | High Speed GMLAN Serial Data (-)9 | I | - |
| 5 | - | - | - | Not Occupied | - | - |
| 6 | 0.35 0.75 |
BK/WH BK/WH |
1851 1851 |
Signal Ground Signal Ground |
I I |
E29 -E29 |
| 7 | 0.5 | BU | 2500 | High Speed GMLAN Serial Data (+) 1 | I | - |
| 8 | 0.5 | WH | 2501 | High Speed GMLAN Serial Data (-) 1 | I | - |
| 9 | - | - | - | Not Occupied | - | - |
| 10 | 0.35 | WH/BU | 5986 | Serial Data Communication Enable | I | - |
| 11 | 0.35 | BU/GN | 1304 | High Speed GMLAN Serial Data (+)9 | I | - |
| 12 | 0.35 | WH/GN | 1305 | High Speed GMLAN Serial Data (-)9 | I | - |
| 13 | 0.35 | BU/GN | 1304 | High Speed GMLAN Serial Data (+)9 | I | - |
| 14 | 0.35 | WH/GN | 1305 | High Speed GMLAN Serial Data (-)9 | I | - |
| 15 | 0.5 | GN | 5060 | Low Speed GMLAN Serial Data | I | - |
| 16 | - | - | - | Not Occupied | - | - |
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.