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HOMESERVICE MANUALSCHEVROLET2013SILVERADO 2500 HD LT, 2D CAB CHASSIS, 6.6L ENG VIN 8, RWDREPAIR 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 VIEWSENGINE CONTROL MODULE (ECM) X2 (L96)
2013 Chevrolet Silverado 2500 HD LT, 2D Cab Chassis, 6.6L Eng VIN 8, RWD

Engine Control Module (ECM) X2 (L96)

2013 Chevrolet Silverado 2500 HD LT, 2D Cab Chassis, 6.6L Eng VIN 8, RWDSECTION Engine Control Module (ECM) X2 (L96)
GM1590596Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness: Engine
  • OEM: 15499466
  • Service: 88988931
  • Description: 73-Way F MX123 Series, Sealed (BK)
Terminal Part Information
  • Pins: 11, 24, 29, 40, 43-44, 60, 63, 65
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 3-5, 11, 18-20, 25, 27, 29, 31, 33, 39, 43, 45, 47, 53, 56
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: Pins: 1-9, 15-20, 25, 28, 33-36, 41, 47-50, 52-56, 61, 67-70, 72 - J/J
  • Core/Insulation Crimp: Pins: 49-50, 69-70 - K/K
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 73
  • Terminal/Tray: 7116-4152-02/9
  • Core/Insulation Crimp: A/5
  • Release Tool/Test Probe: J-38125-11A/J-35616-35 (VT)
Engine Control Module (ECM) X2 (L96)

Pin Wire Circuit Function
1 0.5 PU 2121 IC 1 Control
2 0.5 TN 1744 Fuel Injector 1 Control
3 0.5 D-BU/WH 878 Fuel Injector 8 Control
4 0.5 OG/BK 877 Fuel Injector 7 Control
5 0.5 L-GN/BK 1745 Fuel Injector 2 Control
6 0.5 YE/BK 846 Fuel Injector 6 Control
7 0.5 TN/WH 845 Fuel Injector 5 Control
8 0.5 L-BU/BK 844 Fuel Injector 4 Control
9 0.5 PK/BK 1746 Fuel Injector 3 Control
10 - - Not Available
11 0.35 PU 5284 Camshaft Actuator Solenoid Control
12-14 - - Not Available
15 0.5 YE 581 TAC Motor Control - 1
16 0.5 BN 582 TAC Motor Control - 2
17 0.5 PU/WH 2128 IC 8 Control
18 0.5 D-GN/WH 2124 IC 4 Control
19 0.5 BN/WH 2130 Low Reference
20 0.5 GY 6272 Low Reference
21-23 - - Not Available
24 0.35 BN 6266 Low Reference
25 0.5 BK 2755 Low Reference
26-27 - - Not Available
28 0.5 PK/BK 1339 Ignition 1 Voltage
29 0.35 TN 2199 Low Reference
30-32 - - Not Available
33 0.5 OG 2127 IC 7 Control
34 0.5 D-GN 2125 IC 5 Control
35 0.5 BN 2129 Low Reference
36 0.5 PU 6270 5-Volt Reference 2
37-39 - - Not Available
40 0.35 D-BU 6259 5-Volt Reference 1
41 0.5 GY 2705 5-Volt Reference 1
42 - - Not Available
43 0.35 GY 2701 5-Volt Reference 4
44 0.35 TN 2752 Low Reference
45-46 - - Not Available
47 0.5 TN 1664 HO2S Low Signal - Bank 1 Sensor 1
48 0.5 TN 1667 HO2S Low Signal - Bank 2 Sensor 1
49 0.8 GY 1716 KS 1 Signal
50 0.8 GY 2303 KS 2 Signal
51 - - Not Available
52 0.5 L-GN 3212 HO2S Heater Low Control - Bank 2 Sensor 1
53 0.5 OG/WH 2122 IC 2 Control
54 0.5 L-BU/WH 2126 IC 6 Control
55 0.5 L-BU 2123 IC 3 Control
56 0.5 L-GN 6271 CKP Sensor Signal
57-59 - - Not Available
60 0.35 D-BU/WH 6265 CMP Sensor Signal
61 0.5 TN/WH 331 Oil Pressure Sensor Signal
62 - - Not Available
63 0.35 D-GN 485 TP Sensor 1 Signal
64 - - Not Available
65 0.35 PU 486 TP Sensor 2 Signal
66 - - Not Available
67 0.5 PU/WH 1665 HO2S High Signal - Bank 1 Sensor 1
68 0.5 PU 1666 HO2S High Signal - Bank 2 Sensor 1
69 0.8 D-BU 496 KS 1 Signal
70 0.8 L-BU 1876 KS 2 Signal
71 - - Not Available
72 0.5 GY/WH 3113 HO2S Heater Low Control - Bank 1 Sensor 1
73 3 BK/WH 451 Ground
RENDER: 1.0x

NO RELATED

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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.