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.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSPONTIAC2004GTO STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSOEM CONNECTOR END VIEWSCONNECTOR END VIEWSPCM CONNECTOR C1 CONNECTOR END VIEW
2004 Pontiac GTO Standard
PCM Connector C1 Connector End View
2004 Pontiac GTO StandardSECTION PCM Connector C1 Connector End View
PCM Connector C1 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | BK/RD | 450 | Ground |
| 2 | L-BU/WH | 2867 | 12-Volt Reference - CKP Sensor |
| 3 | PU | 1746 | Fuel Injector 3 Control |
| 4 | GN | 1745 | Fuel Injector 2 Control |
| 5-6 | - | - | Not Used |
| 7 | BU/YE | 596 | 5-Volt Reference - EOP Sensor |
| 8 | GY | 2701 | 5-Volt Reference - TP Sensor |
| 9-10 | - | - | Not Used |
| 11 | L-BU | 1876 | KS 2 Signal |
| 12 | L-BU | 573 | CKP Sensor Signal |
| 13-16 | - | - | Not Used |
| 17 | YE | 1225 | Transmission Fluid Pressure Switch Signal B |
| 18 | GY | 1226 | Transmission Fluid Pressure Switch Signal C |
| 19 | OG | 300 | Ignition 3 Voltage |
| 20 | OG | 740 | Battery Positive Voltage |
| 21 | L-BU/BK | 574 | Low Reference - CKP Sensor |
| 22 | - | - | Not Used |
| 23 | BK | 2759 | Low Reference - FTP Sensor and Fuel Level Sensor |
| 24 | BK/RD | 450 | Ground |
| 25 | TN | 1671 | HO2S Low Signal Bank 2 Sensor 2 |
| 26 | GY/BK | 1667 | HO2S Low Signal Bank 2 Sensor 1 |
| 27 | BK/RD | 450 | Ground |
| 28 | TN/WH | 1669 | HO2S Low Signal Bank 1 Sensor 2 |
| 29 | BU/BK | 1664 | HO2S Low Signal Bank 1 Sensor 1 |
| 30 | GN | 68 | Engine Coolant Level Signal |
| 31 | - | - | Not Used |
| 32 | BU/WH | 771 | Transmission Range Switch Signal A |
| 33 | BN | 86 | Cruise Control Release Signal |
| 34 | WH | 776 | Transmission Range Switch Signal P |
| 35 | - | - | Not Used |
| 36 | BU | 1744 | Fuel Injector 1 Control |
| 37 | YE | 846 | Fuel Injector 6 Control |
| 38-39 | - | - | Not Used |
| 40 | BK/RD | 450 | Ground |
| 41-42 | - | - | Not Used |
| 43 | PK/BK | 877 | Fuel Injector 7 Control |
| 44 | BN/YE | 844 | Fuel Injector 4 Control |
| 45 | PU/WH | 2700 | 5-Volt Reference - A/C Refrigerant Pressure Sensor |
| 46 | GY | 2709 | 5-Volt Reference - FTP Sensor |
| 47 | - | - | Not Used |
| 48 | PU/WH | 2704 | 5-Volt Reference - MAP Sensor |
| 49-50 | - | - | Not Used |
| 51 | BU | 496 | KS 1 Signal |
| 52 | - | - | Not Used |
| 53 | BK/WH | 2762 | Low Reference - TFT Sensor |
| 54 | BK | 469 | Low Reference - MAP Sensor |
| 55-56 | - | - | Not Used |
| 57 | OG | 740 | Battery Positive Voltage |
| 58 | YE | 1045 | RFA Class 2 Serial Data |
| 59 | - | - | Not Used |
| 60 | BK/YE | 2752 | Low Reference - TP Sensor |
| 61 | RD/WH | 632 | Low Reference - CMP Sensor |
| 62 | - | - | Not Used |
| 63 | GN | 470 | Low Reference - EOP Sensor |
| 64 | BK/RD | 450 | Ground |
| 65 | PU/BK | 1670 | HO2S High Signal Bank 2 Sensor 2 |
| 66 | GY | 1666 | HO2S High Signal Bank 2 Sensor 1 |
| 67 | BK/RD | 450 | Ground |
| 68 | PU/WH | 1668 | HO2S High Signal Bank 1 Sensor 2 |
| 69 | PU | 1665 | HO2S High Signal Bank 1 Sensor 1 |
| 70-71 | - | - | Not Used |
| 72 | YE/RD | 772 | Transmission Range Switch Signal B |
| 73 | BN | 633 | Camshaft Position Signal |
| 74 | YE | 410 | ECT Sensor Signal |
| 75 | - | - | Not Used |
| 76 | GY | 845 | Fuel Injector 5 Control |
| 77 | L-GN | 878 | Fuel Injector 8 Control |
| 78 | - | - | Not Used |
| 79 | GN/WH or GY | 898 or 587 | Shift Solenoid Valve 3 High Control - Skip/Shift Solenoid Control |
| 80 | GY/BK | 2761 | Low Reference - ECT Sensor |
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.