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 MANUALSGMC2013SIERRA 3500 HD WT, 2D PICKUP, 6.0L ENG VIN G, RWD, GASREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - DRIVE MOTOR GENERATOR BATTERY CONTROL MODULE TO FUEL PUMP DISABLE MODULECOMPONENT CONNECTOR END VIEWSFUEL PUMP DISABLE CONTROL MODULE (LC8)
2013 GMC Sierra 3500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, Gas
Fuel Pump Disable Control Module (LC8)
2013 GMC Sierra 3500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, GasSECTION Fuel Pump Disable Control Module (LC8)
Connector Part Information
|
Terminal Part Information
|
Fuel Pump Disable Control Module (LC8)
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1 | GN | - | Battery Positive Voltage |
| 2 | BK | - | Ground |
| 3 | GY | - | OEM Fuel Pump Voltage (IN) |
| 4 | GY/BK | - | OEM Fuel Pump Voltage (OUT) |
| 5 | - | - | Not Available |
| 6 | PU/BK | - | OEM Fuel Level Sensor Signal (IN) |
| 7 | RD/WH | - | 5-Volt Output |
| 8 | - | - | Not Available |
| 9 | BU/RD | - | CNG Tank Temperature Sensor Signal |
| 10 | GN/WH | - | CNG Switched 12 Volt Signal |
| 11 | GN | - | Battery Positive Output CNG Cut-Off Solenoid Valve #1 |
| 12 | BK | - | Ground |
| 13 | GY | - | Battery Positive Output CNG Cut-Off Solenoid Valve #2 |
| 14-15 | - | - | Not Available |
| 16 | PU | - | OEM Fuel Level Sensor Signal (OUT) |
| 17 | RD/WH | - | 5-Volt Reference Signal From CNG Module |
| 18 | - | - | Not Available |
| 19 | BU/RD | - | CNG Tank Temperature Output to CNG Module |
| 20 | - | - | Not Available |
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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.