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HOMESERVICE MANUALSCHEVROLET2014EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISQUICK LOOKUPSWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - K17 (EXCEPT JL4) TO K9 (X1)COMPONENT CONNECTOR END VIEWSK20 ENGINE CONTROL MODULE (ECM) X1 & X2K20 ENGINE CONTROL MODULE X1 (LGH)
2014 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G

K20 Engine Control Module X1 (LGH)

2014 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION K20 Engine Control Module X1 (LGH)
GM1968294
Connector Part Information
  • Harness Type: Engine Chassis
  • OEM Connector: 13649839
  • Service Connector: 13574946
  • Description: 73-Way F MX123 34566 Series (BU)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool Service Terminal Tray Core Crimp Insulation Crimp
I 13575575 J-35616-64B (L-BU) J-38125-213 33467-0005 23 Pins: 1-2, 6, 50, 53, 70 - K K
II Pending J-35616-35 (VT) J-38125-11A 7116-4152-02 9 A 5
K20 Engine Control Module X1 (LGH)

Pin Size Color Circuit Function Terminal Type ID Option
1 0.8 BN/WH 3100 DEF Dosing Valve Low Control I -
2 0.8 BN 3099 DEF Dosing Valve High Control I -
3 0.5 D-BU 3105 DEF Smart Pump Control I -
4 0.5 D-GN/WH 465 Fuel Pump Primary Relay Control I -
5 0.5 YE/BK 625 Starter Enable Relay Control I -
6 0.8 D-GN 3101 DEF Reverting Valve High Control I -
7 0.5 BN/WH 6783 Low Reference I -
8 - - - Not Occupied - -
9 0.5 L-BU/WH 6311 Cruise/ETC/TCC Brake Signal I -
10-13 - - - Not Occupied - -
14 0.5 GY 2365 5 Volt Reference I -
15 0.5 GY/BK 2931 Low Reference I -
16 0.5 L-BU/WH 6288 Low Reference I -
17 0.5 BN/WH 419 Check Engine Indicator Control I -
18 0.5 PU 2927 Hydrocarbon Injector Low Control I -
19 0.5 WH/BK 2366 Cooling Fan Control Relay Speed Signal I -
20 0.5 D-BU 507 Wait To Start Indicator Control I -
21 0.5 WH/BK 2366 Cooling Fan Control Relay Speed Signal - -
22 0.5 TN 3657 Low Reference I -
23-24 - - - Not Occupied - -
25 0.5 OG/BK 1786 Transmission Park/Neutral Signal I -
26 0.5 D-BU 5985 Accessory Wakeup Serial Data I -
27 0.5 TN 3661 Low Reference I -
28 0.5 TN 2759 Low Reference I -
29 0.5 BN 3108 DEF Pressure Sensor Signal I -
30 0.5 GY 3106 5 Volt Reference I -
31 0.5 TN 3107 Low Reference I -
32 - - - Not Occupied - -
33 0.5 D-BU 2926 Hydrocarbon Injector High Control I -
34 0.5 D-GN/WH 459 A/C Compressor Clutch Relay Control I -
35 0.5 TN 3104 Low Reference I -
36 0.5 TN 5514 Low Reference I -
37 - - - Not Occupied - -
38 0.5 L-BU 5377 Exhaust Gas Temperature Sensor 2 Signal I -
39 0.5 L-BU 1162 Accelerator Pedal Position Signal 2 I -
40 0.5 TN/BK 6289 Induction Air Temperature Sensor Signal I -
41 0.5 D-BU 6053 Exhaust Pressure Sensor Signal 1 I -
42 0.5 WH/BK 1164 5 Volt Reference I -
43 0.5 GY 6054 5 Volt Reference I -
44 0.5 YE 6055 Low Reference I -
45 0.5 L-GN 7494 High Speed GMLAN Serial Data (-) (3) I -
46 0.5 TN 2501 High Speed GMLAN Serial Data (-) (1) I -
47 - - - Not Occupied - -
48 0.5 PK 439 Run/Crank Ignition 1 Voltage I -
49 0.5 YE 492 Mass Air Flow Sensor Signal I -
50 0.8 OG 225 Generator Turn On Signal I -
51 0.5 PU 1272 Low Reference I -
52 - - - Not Occupied - -
53 0.8 BK 3102 DEF Reverting Valve Low Control I -
54 0.5 GY 3103 DEF Smart Pump Supply Voltage I -
55 0.5 BN 1271 Low Reference I -
56 0.5 D-BU/WH 3660 Exhaust Gas Temperature Sensor 4 Signal I -
57 0.5 L-GN 5378 Exhaust Gas Temperature Sensor 3 Signal I -
58 0.5 PU 1589 Primary Fuel Level Sensor Signal I -
59 0.5 OG/BK 380 A/C Refrigerant Pressure Sensor Signal I -
60 - - - Not Occupied - -
61 0.5 D-BU 1161 Accelerator Pedal Position Signal 1 I -
62 0.5 TN 1274 5 Volt Reference I -
63 0.5 GY 2700 5 Volt Reference I -
64 - - - Not Occupied - -
65 0.5 D-GN 7493 High Speed GMLAN Serial Data (+) (3) I -
66 0.5 TN/BK 2500 High Speed GMLAN Serial Data (+) (1) I -
67 0.5 RD/WH 440 Battery Positive Voltage I -
68 0.5 YE 5991 Powertrain Relay Coil Control I -
69 0.5 D-BU 2364 Cooling Fan Speed Signal I -
70 0.8 GY 23 Generator Field Duty Cycle Signal I -
71 0.5 BN/WH 6141 Low Reference I -
72 0.5 OG/BK 6399 Replicated TOS Signal I -
73 3 PK 1439 Run/Crank Ignition 1 Voltage - -
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.