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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) X1 (L20, L9H, LC9 or LMG)
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Engine Control Module (ECM) X1 (L20, L9H, LC9 or LMG)

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.
GM1590596Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness: Engine
  • OEM: 13616079
  • Service: 88988931
  • Description: 73-Way F Receptacle 0.64 2.8 Series Sealed (BK)

Terminal Part Information
  • Pins: 1, 12, 13, 16, 17, 23, 24, 29-34, 36, 50, 51, 56-59, 68, 70, 71
  • 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: 2, 3, 9-11, 18, 20, 26- 28, 37, 38, 41, 42, 47, 49, 52, 54, 61, 63-65, 69, 71, 72
  • Terminated Lead: 13575575
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: J/J
  • Pin: 73
  • Terminated Lead: Pending
  • Release Tool: J-38125-11A
  • Diagnostic Test Probe: J-35616-35 (VT)
  • Terminal/Tray: 7116-4152-02/9
  • Core/Insulation Crimp: A/5
Engine Control Module (ECM) X1 (L20, L9H, LC9 or LMG)

Pin Wire Circuit Function
1 0.35 OG/BK 1786 Park/Neutral Signal
2 0.5 GY/BK 1694 4WD Low Signal (NQG)
3 0.5 TN/WH 1695 Axle Switch Signal (NQG)
4-8 - - Not Used
9 0.5 L-BU/WH 6311 Brake Switch Signal
10 0.5 PU/WH 1668 HO2S High Signal Bank 1 Sensor 2
11 0.5 TN/WH 1669 HO2S Low Signal Bank 1 Sensor 2
12 0.35 OG/BK 380 A/C Refrigerant Pressure Sensor Signal (CJ2 or C67)
13 0.35 TN 5514 Low Reference (CJ2 or C67)
14-15 - - Not Used
16 0.35 PU 1589 Fuel Level Sensor Signal - Primary
17 0.35 D-BU/WH 473 High Speed Cooling Fan Relay Control
18 0.5 D-BU 5985 Accessory Wakeup Serial Data
19 0.5 PK 439 Ignition 1 Voltage
20 0.5 RD/WH 440 Battery Positive Voltage
21-22 - - Not Used
23 0.35 PU 1272 Low Reference
24 0.35 D-GN 890 Fuel Tank Pressure Sensor Signal
25 - - Not Used
26 0.5 YE 5361 Brake Apply Sensor Signal
27 0.5 TN/BK 2501 High Speed GMLAN Serial Data Bus (-)
28 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus (+)
29 0.35 D-BU 1161 APP Sensor 1 Signal
30 0.35 BN 1271 Low Reference
31 0.35 TN/BK 6049 Low Reference
32 0.35 L-BU 1162 APP Sensor 2 Signal
33 0.35 GY 2709 5-Volt Reference 1
34 0.35 GY/WH 2700 5-Volt Reference 1
35 0.5 TN 2760 Low Reference
36 0.35 TN 1274 5-Volt Reference 1
37 0.5 TN/BK 472 IAT Sensor Signal
38 0.5 TN 2760 Low Reference
39-40 - - Not Used
41 0.5 YE 492 MAF Sensor Signal
42 0.5 BN 5360 Brake Apply Sensor Low Reference
43-46 - - Not Used
47 0.5 PK/BK 1339 Ignition 1 Voltage
48 - - Not Used
49 0.5 TN 1671 HO2S Low Signal Bank 2 Sensor 2
50 0.35 D-GN/WH 465 Fuel Pump Control Module Enable Signal
51 - - Not Used
52 0.5 YE/BK 625 Starter Enable Relay Control
53 - - Not Used
54 0.5 WH 5359 Brake Apply Sensor Supply Voltage
55 - - Not Used
56 0.35 WH/BK 1164 5-Volt Reference 2
57 - - Not Used
58 0.35 D-GN 335 Low Speed Cooling Fan Relay Control
59 0.35 YE 5991 Powertrain Relay Coil Control
60 - - Not Used
61 0.5 WH 1310 EVAP Canister Venst Solenoid Control
62 - - Not Used
63 0.35 D-GN/WH 459 A/C Compressor Clutch Relay Control (CJ2 or C67)
64 0.5 OG/WH 3223 HO2S Heater Low Control Bank 2 Sensor 2
65 0.5 GY/WH 3122 HO2S Heater Low Control Bank 1 Sensor 2
66-67 - - Not Used
68 0.35 BN/WH 419 MIL Control
69 0.5 PU 1670 HO2S High Signal Bank 2 Sensor 2
70 - - Not Used
71 0.35 OG/BK 6399 Replicated TOS Signal (except 31 Series without NQF or NQG)
0.5 PU/WH 821 Vehicle Speed Sensor (VSS) High Signal (MYC with NQG or NQH)
72 0.5 L-GN/BK 822 Vehicle Speed Sensor (VSS) Low Signal (MYC with NQG or NQH)
73 3 BK/WH 451 Ground
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