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Engine Control Module (ECM) X3 (L96)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 GMC Sierra 3500 HD, 2013 GMC Sierra 2500 HD, 2013 GMC Sierra 1500, 2013 Chevrolet Silverado 3500 HD, and 2013 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: 15497996
  • Service: 88988372
  • Description: 73-Way F 64/2.8 Series, Sealed (BK)
Terminal Part Information
  • Pins: 27, 43-44, 55, 63-64
  • Terminal/Tray: 33467-0003/23
  • Core/Insulation Crimp: H/H
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
  • Pins: 10, 16-17, 22, 28-30, 32, 38, 45-46, 48-49, 58, 65-68
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
Engine Control Module (ECM) X3 (L96)

Pin Wire Circuit Function
1-9 - - Not Available
10 0.5 D-GN/WH 428 EVAP Canister Purge Solenoid Control
11-15 - - Not Available
16 0.5 OG/WH 3223 HO2S Heater Low Control Bank 2 Sensor 2
17 0.5 GY 23 Generator Field Duty Cycle Signal
18-21 - - Not Available
22 0.5 BN 5360 Brake Apply Sensor Low Reference
23-26 - - Not Available
27 0.35 TN/BK 6049 Low Reference
28 0.5 GY 2704 5-Volt Reference 3
29 0.5 OG/BK 469 Low Reference
30 0.5 TN 2761 Low Reference
31 - - Not Available
32 0.5 GY/WH 3122 HO2S Heater Low Control Bank 2 Sensor 1
33-37 - - Not Available
38 0.5 WH 5359 Brake Apply Sensor Supply Voltage
39-42 - - Not Available
43 0.35 GY 2709 5-Volt Reference 1
44 0.5 YE 410 ECT Sensor Signal
45 0.5 L-GN 432 MAP Sensor Signal
47 - - Not Available
48 0.5 PU/WH 821 VSS High Signal (MYD with NQF or NQG)
49 0.5 L-GN/BK 822 VSS Low Signal (MYD with NQF or NQG)
50-54 - - Not Available
55 0.35 OG/BK 6399 Replicated TOS Signal (except NQF or NQG)
56-57 - - Not Available
58 0.5 YE 5361 Brake Apply Sensor Signal
59-62 - - Not Available
63 0.35 D-GN 890 Fuel Tank Pressure Sensor Signal
64 0.35 PU 1589 Fuel Level Sensor Signal - Primary
65 0.5 PU 1670 HO2S High Signal Bank 2 Sensor 2
66 0.5 TN 1671 HO2S Low Signal Bank 2 Sensor 2
67 0.5 PU/WH 1668 HO2S High Signal Bank 1 Sensor 2
68 0.5 TN/WH 1669 HO2S Low Signal Bank 1 Sensor 2
69-73 - - Not Available
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