K20 Engine Control Module X1 (L96/LC8)

2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION K20 Engine Control Module X1 (L96/LC8)
GM784851Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 13510837
  • Service Connector: 88988373
  • Description: 56-Way F 0.64 Series, Sealed (BU 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 L-BU 1162 Accelerator Pedal Position Signal 2 I -
3 0.75 L-GN/WH 492 Mass Air Flow Sensor Signal I -
4 - 7 - - - Not Occupied - -
8 0.75 GY/D-BU 7564 Humidity Sensor Signal I -
9 - - - Not Occupied - -
10 0.5 D-BU 1161 Accelerator Pedal Position Signal 1 I -
11 0.75 YE/WH 3200 Throttle Inlet Absolute Pressure Sensor Signal I -
12 0.8 OG/BK 380 A/C Refrigerant Pressure Sensor Signal I -
13 0.8 TN 5514 A/C Refrigerant Pressure Sensor Low Reference I -
14 - 15 - - - Not Occupied - -
16 0.5 TN 1274 Accelerator Pedal Position 5V Reference 2 I -
17 - - - Not Occupied - -
18 0.5 D-BU 5985 Accessory Wakeup Serial Data I -
19 0.5 VT/L-GN 439 Run/Crank Ignition 1 Voltage I -
20 0.5 RD/WH 440 Battery Positive Voltage I -
21 - 23 - - - Not Occupied - -
24 0.5 WH/BK 1164 Accelerator Pedal Position 5V Reference 1 I -
25 0.75 WH/RD 3201 Throttle Inlet Absolute Pressure Sensor 5V Reference I -
26 0.8 GY 2700 A/C Pressure Sensor 5V Reference I -
27 0.5 YE/BK 625 Starter Enable Relay Control I -
28 0.5 D-GN/WH 465 Fuel Pump Primary Relay Control I -
29 0.5 BU 2500 High Speed GMLAN Serial Data (+) 1 I -
30 0.5 VT 1272 Accelerator Pedal Position Low Reference 2 I -
31 0.75 BK/VT 2760 Intake Air Temperature Sensor Low Reference I -
32 0.8 BU/BK 6813 Coolant Temperature Sensor 2 Low Reference I -
33 0.5 L-BU/WH 6311 Cruise/ETC/TCC Brake Signal I -
34 0.5 OG/BK 1786 Transmission Park/Neutral Signal 1 I -
35 - 37 - - - Not Occupied - -
38 0.5 BN 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 0.75 BN/VT 472 Intake Air Temperature Sensor Signal I -
46 0.8 GN 2032 Coolant Temperature Sensor Signal I -
47 0.5 OG 225 Generator Turn On Signal I -
48 - 49 - - - Not Occupied - -
50 0.5 D-GN/WH 817 Vehicle Speed Signal I -
51 - - - Not Occupied - -
52 0.5 BN/WH 419 Check Engine Indicator Control I -
53 0.5 D-GN/WH 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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.