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Home >> GMC >> 2014 >> Yukon Denali, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Wiring Systems And Power Management - Component Connector End Views - Drive Motor Battery Control Module X4 To Fuel Pump Disable Control Module (LC8)) >> Component Connector End Views >> Engine Control Module (ECM) X2 (L9H with Y91)
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Engine Control Module (ECM) X2 (L9H with Y91)

WARNING: This page is about a different car, the 2014 GMC Sierra 3500 HD, 2014 GMC Sierra 2500 HD, 2014 Chevrolet Silverado 3500 HD, and 2014 Chevrolet Silverado 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
GM1830236Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 13528613
  • Service Connector: 19115670
  • Description: 80-Way F MX123 34566 Series (GY)
Terminal Part Information
  • Pins: 2-3, 16, 35, 44, 52, 58, 63-66, 68-69
  • Terminated Lead: 13575811
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Pins: 5-6, 8, 12-13, 17-22, 26-27, 29-30, 32, 34, 37-41, 43, 50, 53, 56-61, 70-79
  • Terminated Lead: 13575575
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: Pins: 5-6, 8, 12-13, 17-22, 32, 34, 37-41, 43, 50, 53, 56-61, 70-79 - J/J
  • Core/Insulation Crimp: Pins: 26-27, 29-30 - K/K
Engine Control Module (ECM) X2 (L9H with Y91)

Pin Wire Circuit Function
1 - - Not Used
2 0.35 PU/WH 6270 5-Volt Reference 2
3 0.35 GY 2701 5-Volt Reference 2
4 - - Not Used
5 0.5 BN 582 TAC Motor Control - 2
6 0.5 YE 581 TAC Motor Control - 1
7 - - Not Used
8 0.5 D-GN/WH 428 EVAP Canister Purge Solenoid Control
9-11 - - Not Used
12 0.5 GY/WH 3113 HO2S Heater Low Control - Bank 1 Sensor 1
13 0.5 L-GN 3212 HO2S Heater Low Control - Bank 2 Sensor 1
14-15 - - Not Used
16 0.35 PU 5284 Camshaft Actuator Solenoid Control (LY6 or L9H)
17 0.5 D-BU/WH 878 Fuel Injector 8 Control
18 0.5 TN/WH 845 Fuel Injector 5 Control
19 0.5 YE/BK 846 Fuel Injector 6 Control
20 0.5 TN 1744 Fuel Injector 1 Control
21 0.5 YE 410 ECT Sensor Signal
22 0.5 TN 2761 Low Reference
23-25 - - Not Used
26 0.8 D-BU 496 KS 1 Signal
27 0.8 GY 1716 KS 1 Signal
28 - - Not Used
29 0.8 L-BU 1876 KS 2 Signal
30 0.8 GY 2303 KS 2 Signal
31 - - Not Used
32 0.5 GY 23 Generator Field Duty Cycle Signal
33 - - Not Used
34 0.5 BK 2755 Low Reference
35 0.35 TN 2752 Low Reference
36 - - Not Used
37 0.5 L-GN/BK 1745 Fuel Injector 2 Control
38 0.5 PK/BK 1746 Fuel Injector 3 Control
39 0.5 L-BU/BK 844 Fuel Injector 4 Control
40 0.5 OG/BK 877 Fuel Injector 7 Control
41 0.5 GY/WH 2705 5-Volt Reference 1
42 - - Not Used
43 0.5 GY 2704 5-Volt Reference 1
44 0.35 D-BU 6259 5-Volt Reference 1
45-49 - - Not Used
50 0.35 TN/WH 331 Oil Pressure Sensor Signal
51 - - Not Used
52 0.35 TN 2199 Low Reference (LY6 or L9H)
53 0.5 OG/BK 469 Low Reference
54-55 - - Not Used
56 0.5 TN 1664 HO2S Low Signal - Bank 1 Sensor 1
57 0.5 PU/WH 1665 HO2S High Signal - Bank 1 Sensor 1
58 0.5 L-GN 432 MAP Sensor Signal
59 0.5 PU 1666 HO2S High Signal - Bank 2 Sensor 1
60 0.5 TN 1667 H02S Low Signal - Bank 2 Sensor 1
61 0.5 BN 25 Charge Indicator Signal
62 - - Not Used
63 0.35 PU 486 TP Sensor 2 Signal
64 0.35 D-BU/WH 6265 CMP Sensor Signal
65 0.35 D-GN 485 TP Sensor 1 Signal
66 0.35 BN 6266 Low Reference
67 - - Not Used
68 0.35 WH/BK 6271 CKP Sensor Signal
69 0.35 GY/BK 6272 Low Reference
70 0.5 PU 2121 IC 1 Control
71 0.5 PU/WH 2128 IC 8 Control
72 0.5 OG 2127 IC 7 Control
73 0.5 OG/WH 2122 IC 2 Control
74 0.5 L-BU/WH 2126 IC 6 Control
75 0.5 D-GN 2125 IC 5 Control
76 0.5 D-GN/WH 2124 IC 4 Control
77 0.5 L-BU 2123 IC 3 Control
78 0.5 BN 2129 Low Reference
79 0.5 BN/WH 2130 Low Reference
80 - - Not Used
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