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 MANUALSGMC2016SIERRA 3500 HD SLE, 4D CAB CHASSIS, 6.6L ENG VIN 8, 4WDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - K20 X1 LML TO K33 X2COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X2 (LML)
2016 GMC Sierra 3500 HD SLE, 4D Cab Chassis, 6.6L Eng VIN 8, 4WD
K20 Engine Control Module X2 (LML)
2016 GMC Sierra 3500 HD SLE, 4D Cab Chassis, 6.6L Eng VIN 8, 4WDSECTION K20 Engine Control Module X2 (LML)
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 | 13579770 | J-35616-4A (PU) | J-38125-11A | 7116-4152-02 | Yazaki 9 | A | 5 |
| II | 19301532 | J-35616-64B (LT BU) | J-38125-213 | Not Available | Not Available | Not Available | Not Available |
| III | 19330179 | 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 | 0.5 | GN | 497 | Fuel Pump Secondary Relay Control | III | LML |
| 2 | - | - | - | Not Occupied | - | - |
| 3 | 0.5 | YE | 2928 | Fuel Metering Valve High Control | III | LML |
| 4 | 0.8 | VT/WH | 2530 | Fuel Rail Pressure Solenoid Control | III | LML |
| 5 | 0.5 | BK | 2929 | Fuel Metering Valve Low Control | III | LML |
| 6 | 0.5 | WH | 5931 | Variable Nozzle Turbo Solenoid Low Signal | III | LML |
| 7 | 0.5 | TN | 2752 | Throttle Position Sensor Low Reference | III | LML |
| 8 | 0.5 | TN | 2753 | Exhaust Gas Recirculation Sensor Low Reference | III | LML |
| 9 | 0.5 | BN | 1174 | Oil Level Switch Signal | III | LML |
| 10 | 0.5 | BN | 6782 | Exhaust Gas Temperature Sensor 1 Low Reference | III | LML |
| 11 | 0.5 | TN | 3653 | EGR Cooler Bypass Position Sensor Low Reference | III | LML |
| 12 | - | - | - | Not Occupied | - | - |
| 13 | 0.8 | BN/WH | 4901 | Direct Fuel Injector (DFI) High Voltage Supply Cylinder 1 | II | LML |
| 14 | 0.8 | TN/WH | 4907 | Direct Fuel Injector (DFI) High Voltage Supply Cylinder 7 | II | LML |
| 15 | 0.8 | BU | 4804 | Direct Fuel Injector (DFI) High Voltage Control Cylinder 4 | II | LML |
| 16 | 0.8 | BN | 4801 | Direct Fuel Injector (DFI) High Voltage Control Cylinder 1 | II | LML |
| 17 | 0.8 | BK/WH | 451 | Signal Ground | III | LML |
| 18 | 0.8 | BK/WH | 451 | Signal Ground | III | LML |
| 19 | 0.8 | YE | 2834 | Fuel Rail Pressure Solenoid Low Reference | III | LML |
| 20 | - | - | - | Not Occupied | - | - |
| 21 | 0.8 | BK/WH | 451 | Signal Ground | III | LML |
| 22 | 0.5 | BU | 5930 | Variable Nozzle Turbo Solenoid High Signal | III | LML |
| 23 | - | - | - | Not Occupied | - | - |
| 24 | 0.5 | BK/BU | 61 | Outside Ambient Temperature Sensor Low Reference | III | LML |
| 25 | 0.5 | OG/BK | 5929 | Variable Nozzle Turbo Position Sensor Low Reference | III | LML |
| 26 | 0.5 | BU/BK | 6813 | Coolant Temperature Sensor 2 Low Reference | III | LML |
| 27 - 28 | - | - | - | Not Occupied | - | - |
| 29 | 0.8 | BU/WH | 4904 | Direct Fuel Injector (DFI) High Voltage Supply Cylinder 4 | II | LML |
| 30 | 0.8 | VT/WH | 4906 | Direct Fuel Injector (DFI) High Voltage Supply Cylinder 6 | II | LML |
| 31 | 0.8 | TN | 4807 | Direct Fuel Injector (DFI) High Voltage Control Cylinder 7 | II | LML |
| 32 | 0.8 | VT | 4806 | Direct Fuel Injector (DFI) High Voltage Control Cylinder 6 | II | LML |
| 33 - 40 | - | - | - | Not Occupied | - | - |
| 41 | 0.5 | BK | 2755 | Oil Pressure Sensor Low Reference | III | LML |
| 42 - 46 | - | - | - | Not Occupied | - | - |
| 47 | 0.5 | GY | 2702 | Exhaust Gas Recirculation 5V Reference 2 | III | LML |
| 48 | 0.5 | GY | 3652 | EGR Cooler Bypass Position Sensor 5V Reference | III | LML |
| 49 - 65 | - | - | - | Not Occupied | - | - |
| 66 | 0.5 | TN | 5928 | Variable Nozzle Turbo Position Sensor 5V Reference | III | LML |
| 67 | 0.5 | VT/WH | 6270 | Crankshaft 60X Sensor 5V Reference | III | LML |
| 68 - 72 | - | - | - | Not Occupied | - | - |
| 73 | 3 | BK/WH | 451 | Signal Ground | I | LML |
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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.