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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)COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE X1 (L96)
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, Gas

K20 Engine Control Module X1 (L96)

2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, GasSECTION K20 Engine Control Module X1 (L96)
GM4068000
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 13820449
  • Service Connector: 19329930
  • Description: 56-Way F 0.64 I Series, Sealed (BK with BU Terminal Position Assurance)
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
Pin Size Color Circuit Function Terminal Type ID Option
1 - - - Not Occupied - -
2 0.5 GN/WH 1162 Accelerator Pedal Position Signal 2 I -
3 0.5 GN/WH 492 Mass Air Flow Sensor Signal I -
4 0.5 GY/BK 1694 Four Wheel Drive Low Signal I -
5 0.5 YE/WH 1695 Four Wheel Drive Wheel Lock Indicator Control I -
6 - 7 - - - Not Occupied - -
8 0.5 GY/BU 7564 Humidity Sensor Signal I -
9 - - - Not Occupied - -
10 0.5 YE/WH 1161 Accelerator Pedal Position Signal 1 I -
11 0.5 YE/WH 3200 Throttle Inlet Absolute Pressure Sensor Signal I -
12 0.5 GN 380 A/C Refrigerant Pressure Sensor Signal I -
13 0.5 BK/BN 5514 A/C Refrigerant Pressure Sensor Low Reference I -
14 0.5 YE/BU 1465 Secondary Fuel Pump Relay Control I -
15 - - - Not Occupied - -
16 0.5 BN/RD 1274 Accelerator Pedal Position 5V Reference 2 I -
17 - - - Not Occupied - -
18 0.5 VT/YE 5985 Accessory Wakeup Serial Data I -
19 0.5 VT/GN 439 Run/Crank Ignition 1 Voltage I -
20 0.5 RD/BN 440 Battery Positive Voltage I -
21 - 23 - - - Not Occupied - -
24 0.5 WH/RD 1164 Accelerator Pedal Position 5V Reference 1 I -
25 0.5 WH/RD 3201 Throttle Inlet Absolute Pressure Sensor 5V Reference I -
26 0.5 BN/RD 2700 A/C Pressure Sensor 5V Reference I -
27 0.5 YE/BK 625 Starter Enable Relay Control I -
28 0.5 GN/GY 465 Fuel Pump Primary Relay Control I -
29 0.5 BU 2500 High Speed GMLAN Serial Data (+) 1 I -
30 0.5 BK/VT 1272 Accelerator Pedal Position Low Reference 2 I -
31 0.5 BK/VT 2760 Intake Air Temperature Sensor Low Reference I -
32 - - - Not Occupied - -
33 0.5 WH/BU 6311 Cruise/ETC/TCC Brake Signal I -
34 0.5 WH/GY 1786 Transmission Park/Neutral Signal 1 I -
35 - 37 - - - Not Occupied - -
38 0.5 BK/BU 1271 Accelerator Pedal Position Low Reference 1 I -
39 - - - Not Occupied - -
40 0.5 YE 5991 Powertrain Relay Coil Control I -
41 - 42 - - - Not Occupied - -
43 0.5 WH 2501 High Speed GMLAN Serial Data (-) 1 I -
44 - - - Not Occupied - -
45 0.5 WH/BU 6289 Induction Air Temperature Sensor Signal I -
46 - - - Not Occupied - -
47 0.5 BN 25 Charge Indicator Control I -
48 - 51 - - - Not Occupied - -
52 0.5 BN/WH 419 Check Engine Indicator Control I -
53 0.5 WH/GY 459 A/C Compressor Clutch Relay Control I -
54 - 55 - - - Not Occupied - -
56 0.5 WH 1310 EVAP Canister Vent Solenoid Control I -
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.