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HOMESERVICE MANUALSGMC2011YUKON BASE, 5.3 0, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - ELECTRONIC STEERING CONTROL MODULE X2 THROUGH MEMORY SEAT MODULECOMPONENT CONNECTOR END VIEWSENGINE CONTROL MODULE (ECM) X1 (EXCEPT HP2)
2011 GMC Yukon Base, 5.3 0, RWD

Engine Control Module (ECM) X1 (except HP2)

2011 GMC Yukon Base, 5.3 0, RWDSECTION Engine Control Module (ECM) X1 (except HP2)
Fig 1: Engine Control Module (ECM) X1 (except HP2) Connector End View
GM1590596Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X1 (except HP2)

Pin Wire Circuit Function
1 0.35 OG/BK 1786 Park/Neutral Signal
2-8 - - 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
13 0.35 TN 5514 Low Reference
14 0.35 PU/WH 5024 CKP Signal Low (Y91)
15 - - Not Available
16 0.35 PU 1589 Fuel Level Sensor Signal
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 Voltage
20 0.5 RD/WH 440 Battery Positive Voltage
21-22 - - Not Available
23 0.35 PU 1272 Low Reference
24 0.35 D-GN 890 Fuel Tank Pressure Sensor Signal
25-26 - - Not Available
27 0.5 TN 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 Accelerator Pedal Position Sensor 1 Signal
30 0.35 BN 1271 Low Reference
31 0.35 TN/BK 6049 Low Reference
32 0.35 L-BU 1162 Accelerator Pedal Position Sensor 2 Signal
33 0.35 GY 2709 5-Volt Reference 1
34 0.35 GY/WH 2700 5-Volt Reference 1
35 - - Not Available
36 0.35 TN 1274 5-Volt Reference 1
37 0.5 TN/BK 472 Intake Air Temperature (IAT) Sensor Signal
38 0.5 TN 2760 Low Reference
39-40 - - Not Available
41 0.5 YE 492 Mass Air Flow (MAF) Sensor Signal
42-46 - - Not Available
47 0.5 PK/BK 1339 Ignition Voltage
48 0.35 WH/BK 5039 CKP Signal High (Y91)
49 0.5 TN 1671 HO2S Low Signal - Bank 2 Sensor 2
50 0.35 D-GN/WH 465 Primary Fuel Pump Relay Control (L96)
0.35 D-GN/WH 465 Fuel Pump Control Module Enable (except L96)
51 0.35 TN 1465 Secondary Fuel Pump Relay Control (except NQZ)
52 0.5 YE/BK 625 Starter Enable Relay Control
53-55 - - Not Available
56 0.35 WH/BK 1164 5-Volt Reference 2
57 0.35 YE/BK 1827 Vehicle Speed Signal (L96)
58 0.35 D-GN 335 Low Speed Cooling Fan Relay Control
59 0.35 YE 5991 Powertrain Relay Coil Control
60 - - Not Available
61 0.5 WH 1310 EVAP Canister Vent Solenoid Control
62 - - Not Available
63 0.8 D-GN/WH 459 A/C Compressor Clutch Relay Control
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 Available
68 0.35 BN/WH 419 Malfunction Indicator Lamp
(MIL) Control
69 0.5 PU 1670 HO2S High Signal - Bank 2 Sensor 2
70 0.35 L-BU 1937 Rear Tank Fuel Level Sensor Signal (except NQZ)
71 0.35 OG/BK 6399 Replicated Transmission Output Speed (TOS) Signal (MYD without NQH or NP0)
0.5 PU/WH 821 Replicated Transmission Output Speed (TOS) Signal (MYD with NQH or NP0)
72 0.5 L-GN/BK 822 Signal Return (MYD with NQH or NP0)
73 3 BK/WH 451 Ground
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 15499466 (L94)
  • OEM Connector: 13616079 (except L94)
  • Service Connector: 88988931
  • Description: 73-Way F Receptacle 0.64 Sealed (BK)
Terminal Part Information
  • Pins 1, 12-14, 16, 17, 23, 24, 29-34, 36, 48, 50, 51, 56-59, 68, 70 (without NP0 or NQH), 71 (without NP0 or NQH)
  • 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: 9-11, 18-20, 27, 28, 37, 38, 41, 47, 49, 52, 61, 63-65, 69, 71 (NP0 or NQH), 72 (NP0 or NQH)
  • 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
  • Pins: 73
  • Terminated Lead: Service by Terminal - 7116-4152-02
  • Release Tool: J-38125-11A
  • Diagnostic Test Probe: J-35616-35 (VT)
  • Terminal/Tray: 7116-4152-02/9
  • Core/Insulation Crimp: A/5
RENDER: 1.0x

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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.