Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2051 (COMPONENT CONNECTOR END VIEWS - (2 OF 5))ENGINE CONTROL MODULE (ECM) X2 (LCS)
2004 Oldsmobile Bravada AWD
Engine Control Module (ECM) X2 (LCS)
2004 Oldsmobile Bravada AWDSECTION Engine Control Module (ECM) X2 (LCS)
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.
Engine Control Module (ECM) X2 (LCS)
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1 | 0.8 BK/WH | 251 | Ground |
| 2 | 0.8 BK/WH | 251 | Ground |
| 3 | 1 PK/BK | 6341 | Powertrain Relay Contact Signal |
| 4 | 0.8 BK/WH | 251 | Ground |
| 5 | 1 PK/BK | 6341 | Powertrain Relay Contact Signal |
| 6 | 1 PK/BK | 6341 | Powertrain Relay Contact Signal |
| 7 | 0.8 GY | 3122 | HO2S Heater Low Control Bank 1 Sensor 2 |
| 8 | - | - | Not Used |
| 9 | 0.5 BN/WH | 6281 | Fuel Level Sensor Low Reference |
| 10 | 0.5 D-GN/WH | 465 | Fuel Pump Primary Relay Control |
| 11 | 0.5 TN | 5514 | Low Reference |
| 12 | - | - | Not Used |
| 13 | 0.5 YE | 492 | Mass Air Flow (MAF) Sensor Signal |
| 14 | 0.5 BN/WH | 6283 | Fuel Tank Vapor Pressure Sensor Supply Voltage |
| 15 | 0.5 D-BU | 1161 | Accelerator Pedal Position Signal (1) |
| 16-18 | - | - | Not Used |
| 19 | 0.5 WH | 1310 | EVAP Canister Vent Solenoid Control |
| 20 | 0.8 OG | 3223 | HO2S Sensor Heater Low Control Bank 2 Sensor 2 |
| 21 | 0.5 BN/WH | 419 | Check Engine Indicator Control |
| 22 | 0.5 TN | 2760 | Low Reference |
| 23 | 0.5 TN/WH | 3121 | HO2S Sensor Low Signal Bank 1 Sensor 2 |
| 24 | 0.5 TN | 3221 | HO2S Sensor Low Signal Bank 2 Sensor 2 |
| 25 | 0.5 L-BU | 1162 | Accelerator Pedal Position Signal (2) |
| 26 | 0.5 L-BU | 1937 | Secondary Fuel Level Sensor Signal |
| 27 | 0.5 G-GN | 890 | Fuel Tank Pressure Sensor Signal |
| 28 | - | - | Not Used |
| 29 | 0.5 D-BU | 1936 | Primary Fuel Level Sensor Signal |
| 30-32 | - | - | Not Used |
| 33 | 0.5 D-GN | 954 | 5 Volt Reference |
| 34 | 0.5 BN | 1271 | Accelerator Pedal Position Low Reference (1) |
| 35 | 0.5 GY | 2700 | 5 Volt Reference 2 |
| 36 | 0.5 L-BU | 6106 | High Speed GMLAN Serial Data (-) (2) |
| 37 | 0.5 D-BU | 6105 | High Speed GMLAN Serial Data (+) (2) |
| 38 | 0.5 PU | 3120 | HO2S Sensor High Signal Bank 1 Sensor 2 |
| 39 | 0.5 OG/BK | 380 | A/C Refrigerant Pressure Sensor Signal |
| 40 | - | - | Not Used |
| 41 | 0.5 D-BU | 5985 | Accessory Wakeup Serial Data |
| 42 | 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data (+) (1) |
| 43-45 | - | - | Not Used |
| 46 | 0.5 D-GN | 335 | Low Speed Cooling Fan Relay Control |
| 47 | 0.5 PU | 1272 | Accelerator Pedal Position Low Reference (2) |
| 48 | 0.5 TN | 1274 | Accelerator Pedal Position 5 Volt Reference (2) |
| 49 | 0.5 WH/BK | 1164 | Accelerator Pedal Position 5 Volt Reference (1) |
| 50 | 0.5L-BU | 6289 | Induction Air Temperature Sensor Signal |
| 51 | 0.5 PU | 3220 | HO2S Sensor High Signal Bank 2 Sensor 2 |
| 52 | 0.5 WH | 17 | Stop Lamp Switch Signal |
| 53 | - | - | Not Used |
| 54 | 0.5 PK | 639 | Ignition 1 Voltage |
| 55 | 0.5 TN | 2501 | High Speed GMLAN Serial Data (-) (1) |
| 56 | 0.5 RD/WH | 40 | Battery Positive Voltage |
| 57 | 0.5 OG/BK | 1733 | Electronic Control Unit 12 Volt Reference (2) |
| 58 | 0.5 YE | 5991 | Powertrain Relay Coil Control |
Connector Part Information
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Terminal Part Information
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RENDER: 1.0x
NO RELATED
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When to See a Mechanic
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.