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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2051 (COMPONENT CONNECTOR END VIEWS - (2 OF 5))ENGINE CONTROL MODULE (ECM) X3 (LY7)
2004 Oldsmobile Bravada AWD

Engine Control Module (ECM) X3 (LY7)

2004 Oldsmobile Bravada AWDSECTION Engine Control Module (ECM) X3 (LY7)
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Control Module (ECM) X3 (LY7) Connector End View
GM1590596Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X3 (LY7)

Pin Wire Circuit Function
1-2 - - Not Used
3 0.5 TN/WH 3211 HO2S Low Reference Bank 2 Sensor 1
4 0.5 PU/WH 3210 HO2S Reference Voltage Bank 2 Sensor 1
5 0.5 PU 3220 HO2S High Signal Bank 2 Sensor 2
6 0.5 TN 3221 HO2S Low Signal Bank 2 Sensor 2
7 0.5 OG 225 Generator Turn On Signal
8-14 - - Not Used
15 0.5 L-GN 3212 HO2S Heater Low Control - Bank 2 Sensor 1
16-20 - - Not Used
21 0.5 TN 5514 Low Reference
22 - - Not Used
23 0.5 OG/BK 469 Low Reference
24-28 - - Not Used
29 0.5 GY 23 Generator Field Duty Cycle Signal
30-32 - - Not Used
33 0.5 TN 2501 High Speed GMLAN Serial Data Bus-
34 - - Not Used
35 0.5 TN 2761 Low Reference
36 - - Not Used
37 0.5 GY 2700 5-Volt Reference 1
38 - - Not Used
39 0.5 GY 2704 5-Volt Reference 1
40-45 - - Not Used
46 0.5 OG/BK 1786 Ignition Lock Cylinder Control Actuator Signal
47 - - Not Used
48 0.5 D-GN/WH 428 EVAP Canister Purge Solenoid Control
49 0.5 D-GN 335 Low Speed Cooling Fan Relay Control
50 0.5 OG/WH 3223 HO2S Heater Low Control Bank 2 Sensor 2
51-52 - - Not Used
53 0.5 TN/BK 2500 High Speed GMLAN Serial Data Bus+
54 - - Not Used
55 0.5 YE 410 Engine Coolant Temperature(ECT) Sensor Signal
56 - - Not Used
57 0.5 OG/BK 380 A/C Refrigerant Pressure Sensor Signal
58 - - Not Used
59 0.5 L-GN 432 Manifold Absolute Pressure (MAP) Sensor Signal
60-64 - - Not Used
65 0.5 TN/BK 231 Engine Oil Pressure (EOP) Switch Signal
66-73 - - Not Used
Connector Part Information 
  • OEM: 15497996
  • Service: 88988372
  • Description: 73-Way F 0.64 2.8 Series, Sealed (BK)
Terminal Part Information 
  • Terminal/Tray: 33467-0005/23
  • Core/Insulation Crimp: J/J
  • Release Tool/Test Probe: J-38125-213/J-35616-64B (L-BU)
RENDER: 1.0x

NO RELATED

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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.