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.
Powertrain Control Module (PCM) X2 (L26+NU6)
2008 Pontiac Grand Prix BaseSECTION Powertrain Control Module (PCM) X2 (L26+NU6)
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Powertrain Control Module (PCM) X2 (L26+NU6)
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1 | 0.35 BN | 1456 | EGR Valve Position Signal |
| 2 | 0.35 OG/BK | 1061 | UART Serial Data Secondary |
| 3 | 0.35 TN | 800 | UART Serial Data Primary |
| 4 | 0.35 BK/WH | 845 | Fuel Injector 5 Control |
| 5 | 0.35 BK | 1744 | Fuel Injector 1 Control |
| 6 | 0.35 YE/BK | 846 | Fuel Injector 6 Control |
| 7 | 0.35 PK/BK | 1746 | Fuel Injector 3 Control |
| 8 | 0.35 BK | 2753 | Low Reference |
| 9 | 0.35 L-GN/BK | 1745 | Fuel Injector 2 Control |
| 10 | 0.35 L-BU/BK | 844 | Fuel Injector 4 Control |
| 11 | 0.35 TN/BK | 424 | IC Timing Signal |
| 12 | 0.5 BK/WH | 3112 | HO2S Heater Low Control Sensor 1 |
| 13 | 0.35 RD | 1676 | EGR Solenoid High Control |
| 14-15 | - | - | Not Used |
| 16 | 0.35 GY | 435 | EGR Solenoid Low Control |
| 17 | - | - | Not Used |
| 18 | 0.35 L-GN | 432 | MAP Sensor Signal |
| 19-25 | - | - | Not Used |
| 26 | 0.35 BK | 630 | Camshaft Position Signal |
| 27 | 0.35 PU/WH | 430 | Low Resolution Engine Speed Signal |
| 28 | 0.35 L-BU/BK | 647 | Medium Resolution Engine Speed Signal |
| 29 | 0.35 BK | 2761 | Low Reference |
| 30 | 0.35 OG/BK | 469 | Low Reference |
| 31 | 0.35 BN | 1174 | Oil Level Switch Signal |
| 32 | - | - | Not Used |
| 33 | 0.35 GY | 2702 | 5-Volt Reference 1 |
| 34 | 0.35 GY | 2704 | 5-Volt Reference 2 |
| 35 | 0.35 GY | 474 | 5 Volt Reference 1 |
| 36 | - | - | Not Used |
| 37 | 0.35 RD/BK | 453 | Low Reference |
| 38-40 | - | - | Not Used |
| 41 | 0.35 D-GN/WH | 428 | EVAP Canister Purge Solenoid Valve Control |
| 42-44 | - | - | Not Used |
| 45 | 0.35 GY | 23 | Generator Field Duty Cycle Signal |
| 46 | 0.35 D-BU | 496 | Knock Sensor 1 Signal |
| 47 | 0.5 TN/WH | 3111 | HO2S Low Signal |
| 48 | 0.5 PU/WH | 3110 | HO2S High Signal |
| 49-52 | - | - | Not Used |
| 53 | 0.35 RD | 225 | Generator Turn On Signal |
| 54 | - | - | Not Used |
| 55 | 0.35 YE | 410 | ECT Sensor Signal |
| 56 | - | - | Not Used |
| 57 | 0.35 TN/BK | 231 | Oil Pressure Switch Signal |
| 58 | 0.35 L-BU | 1876 | Knock Sensor 2 Signal |
| 59 | 0.35 PK/BK | 429 | Air Solenoid Control |
| 60 | - | - | Not Used |
| 61 | 0.35 WH | 423 | IC Timing Control |
| 62-72 | - | - | Not Used |
| 73 | 2 BK/WH | 451 | Ground |
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.