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HOMESERVICE MANUALSGMC2011SAVANA G2500, VAN CARGO, 6.0 GREPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS - 1-2 SHIFT SOLENOID THROUGH FUEL INJECTOR 5COMPONENT CONNECTOR END VIEWSENGINE CONTROL MODULE (ECM)ENGINE CONTROL MODULE (ECM) X2 (LU3)
2011 GMC Savana G2500, Van Cargo, 6.0 G

Engine Control Module (ECM) X2 (LU3)

2011 GMC Savana G2500, Van Cargo, 6.0 GSECTION Engine Control Module (ECM) X2 (LU3)
Fig 1: Connector End View Engine Control Module (ECM) X2 (LU3)
GM1673472Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X2 (LU3)

Pin Wire Circuit Function
1-3 - - Not Used
4 0.5 TN 2761 Low Reference
5 0.35 GY/BK 6272 Low Reference
6 0.5 TN 1744 Fuel Injector 1 Control
7 0.5 YE/BK 846 Fuel Injector 6 Control
8 0.5 TN/WH 845 Fuel Injector 5 Control
9 0.5 BN 2129 Low Reference
10 0.5 L-BU/BK 844 Fuel Injector 4 Control
11 0.5 PK/BK 1746 Fuel Injector 3 Control
12 0.5 L-GN/BK 1745 Fuel Injector 2 Control
13 0.5 GY 2704 5-Volt Reference 1
14-15 - - Not Used
16 0.5 YE 581 Throttle Actuator Control Motor Control - 1
17-19 - - Not Used
20 0.35 BN 6266 Low Reference
21 - - Not Used
22 0.5 PU 2121 Ignition Coil 1 Control
23 0.5 L-BU 2123 Ignition Coil 3 Control
24 0.5 OG/WH 2122 Ignition Coil 2 Control
25-29 - - Not Used
30 0.5 D-GN/WH 428 Evaporative Emission (EVAP) Canister Purge Solenoid Control
31 0.5 OG 225 Generator Turn On Signal
32 0.5 BN 582 Throttle Actuator Control Motor Control - 2
33 0.35 D-BU 6259 5-Volt Reference 1
34 - - Not Used
35 0.35 GY 2705 5-Volt Reference 1
36 0.35 TN/WH 331 Oil Pressure Sensor Signal
37 0.8 PU/WH 1665 Heated Oxygen Sensor (HO2S) High Signal - Bank 1 Sensor 1
38 0.8 PU 1666 Heated Oxygen Sensor (HO2S) High Signal - Bank 2 Sensor 1
39 0.5 L-GN 432 Manifold Absolute Pressure (MAP) Sensor Signal
40 0.35 TN 2752 Low Reference
41 0.35 BK 2755 Low Reference
42 - - Not Used
43 0.5 GY 23 Generator Field Duty Cycle Signal
44 - - Not Used
45 0.35 WH/BK 6271 Crankshaft Position (CKP) Sensor Signal
46 0.35 D-BU/WH 6265 Camshaft Position (CMP) Sensor Signal
47 - - Not Used
48 0.8 TN 1664 Heated Oxygen Sensor (HO2S) Low Signal - Bank 1 Sensor 1
49 0.5 OG/BK 469 Low Reference
50 0.5 GY 1716 Knock Sensor (KS) 1 Signal
51 0.5 D-BU 496 Knock Sensor (KS) 1 Signal
52 - - Not Used
53 0.35 GY 2701 5-Volt Reference 2
54 0.35 PU/WH 6270 5-Volt Reference 2
55-56 - - Not Used
57 0.35 D-GN 485 Throttle Position (TP) Sensor 1 Signal
58 0.5 YE 410 Engine Coolant Temperature (ECT) Sensor Signal
59 0.35 PU 486 Throttle Position (TP) Sensor 2 Signal
60-64 - - Not Used
65 0.8 GY/WH 3113 Heated Oxygen Sensor (HO2S) Heater Low Control - Bank 1 Sensor 1
66 0.8 L-GN 3212 Heated Oxygen Sensor (HO2S) Heater Low Control - Bank 2 Sensor 1
67 - - Not Used
68 0.8 TN 1667 Heated Oxygen Sensor (HO2S) Low Signal - Bank 2 Sensor 1
69 - - Not Used
70 0.5 GY 2303 Knock Sensor (KS) 2 Signal
71 0.5 L-BU 1876 Knock Sensor (KS) 2 Signal
72 - - Not Used
73 3 BK/WH 1551 Ground
Connector Part Information
  • Harness Type: Engine
  • OEM Connector: 13580811
  • Service Connector: 88988372
  • Description: 73-Way F MX123 34566 Series (L-GY)
Terminal Part Information
  • Pins: 4-5, 6-13, 16, 20, 30-33, 35-41, 43, 45-46, 48-51, 53-54, 57-59, 65-66, 68, 70-71
  • Terminated Lead: Pins: 4-5, 6-13, 16, 20, 30-33, 35-39, 41, 43, 45-46, 48-51, 54, 58, 65-66, 68, 70-71 - 13575575
  • Terminated Lead: Pins: 40, 53, 57, 59 - 13575811
  • Release Tool: J-38125-213
  • Diagnostic Test Probe: J-35616-64B (L-BU)
  • Terminal/Tray: Pins: 4-5, 6-13, 16, 20, 30-33, 35-39, 41, 43, 45-46, 48-51, 54, 58, 65-66, 68, 70-71 - 33467-0005/23
  • Terminal/Tray: Pins: 40, 53, 57, 59 - 33467-0003/23
  • Core/Insulation Crimp: Pins: 4-5, 13, 20, 33, 35-39, 41, 45-46, 48-51, 54, 58, 65-66, 68, 70-71 - K/K
  • Core/Insulation Crimp: Pins: 6-12, 16, 22-24, 30-32, 43 - J/J
  • Core/Insulation Crimp: Pins: 40, 53, 57, 59 - H/H
  • 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
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.