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.
2005 Pontiac Grand Prix GXPFACTORY OEM SERVICE PROCEDURE
Engine Controls Connector End Views
Brake Booster Vacuum Sensor Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | OG | 6030 | Brake Booster Vacuum Signal |
| 2 | YE/BK | 6032 | Low Reference |
| 3 | GY | 6031 | 5-Volt Reference |
Crankshaft Position (CKP) Sensor Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | D-BU | 1869 | CKP Sensor Signal |
| B | YE | 1868 | Low Reference |
| C | L-GN | 1867 | 12-Volt Reference |
Knock Sensor (KS) 2 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | L-BU | 1876 | Knock Sensor 2 Signal |
| B | GY | 2303 | Low Reference |
Fuel Injector 7 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PK/BK | 5291 | Ignition 1 Voltage |
| B | RD/BK | 877 | Fuel Injector 7 Control |
Fuel Injector 5 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PK/BK | 5291 | Ignition 1 Voltage |
| B | BK/WH | 845 | Fuel Injector 5 Control |
Fuel Injector 3 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PK/BK | 5291 | Ignition 1 Voltage |
| B | PK/BK | 1746 | Fuel Injector 3 Control |
Fuel Injector 1 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PK/BK | 5291 | Ignition 1 Voltage |
| B | BK | 1744 | Fuel Injector 1 Control |
Fuel Injector 2 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PK/BK | 5292 | Ignition 1 Voltage |
| B | L-GN/BK | 1745 | Fuel Injector 2 Control |
Fuel Injector 4 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PK/BK | 5292 | Ignition 1 Voltage |
| B | L-BU/BK | 844 | Fuel Injector 4 Control |
Fuel Injector 6 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PK/BK | 5292 | Ignition 1 Voltage |
| B | YE/BK | 846 | Fuel Injector 6 Control |
Fuel Injector 8 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PK/BK | 5292 | Ignition 1 Voltage |
| B | D-BU/WH | 878 | Fuel Injector 8 Control |
Heated Oxygen Sensor (HO2S) 2 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | TN/WH | 1669 | HO2S Low Signal |
| B | PU/WH | 1668 | HO2S High Signal |
| C | BN | 2391 | HO2S Heater Low Control Sensor 2 |
| D | PK/BK | 5293 | Ignition 1 Voltage |
Heated Oxygen Sensor (HO2S) 1 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | TN | 1664 | HO2S Low Signal |
| B | PU/WH | 1665 | HO2S High Signal |
| C | BK/WH | 3113 | HO2S Heater Low Control Sensor 1 |
| D | PK/BK | 5293 | Ignition 1 Voltage |
Camshaft Position (CMP) Sensor Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | RD | 631 | 12-Volt Reference |
| B | PK/BK | 632 | Low Reference |
| C | BN/WH | 633 | CMP Sensor Signal |
Knock Sensor (KS) 1 Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | D-BU | 496 | Knock Sensor 1 Signal |
| B | GY | 1716 | Low Reference |
Manifold Absolute Pressure (MAP) Sensor Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | OG/BK | 469 | Low Reference |
| B | L-GN | 432 | MAP Sensor Signal |
| C | GY | 2704 | 5-Volt Reference |
Evaporative Emission (EVAP) Canister Purge Solenoid Valve Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PK/BK | 5293 | Ignition 1 Voltage |
| B | D-GN/WH | 428 | EVAP Canister Purge Solenoid Control |
Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | YE | 492 | MAF Sensor Signal |
| B | PK/BK | 5294 | Ignition 1 Voltage |
| C | BK/WH | 451 | Ground |
| D | TN | 472 | IAT Sensor Signal |
| E | BK | 2760 | Low Reference |
Engine Coolant Temperature (ECT) Sensor Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BK | 2761 | Low Reference |
| B | YE | 410 | ECT Sensor Signal |
Throttle Actuator Control (TAC) Module Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | D-GN | 485 | TP Sensor 1 Signal |
| B | L-BU/BK | 1688 | 5-Volt Reference B |
| C | BK/WH | 1704 | Low Reference |
| D | PU | 486 | TP Sensor 2 Signal |
| E | YE | 581 | TAC Motor Control 1 |
| F | BN | 582 | TAC Motor Control 2 |
| G | L-BU/BK | 1688 | 5-Volt Reference B |
| H | BK/WH | 1704 | Low Reference |
Engine Oil Pressure (EOP) Sensor Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | BK | 2755 | Low Reference |
| 2 | GY | 2705 | 5-Volt Reference |
| 3 | TN/WH | 331 | Oil Pressure Sensor Signal |
Value Lifter Oil Manifold (VLOM) Assembly Connector End View
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | OG | 5494 | Cylinder Shutoff Solenoid 4 |
| B | GY | 5493 | Cylinder Shutoff Solenoid 3 |
| C | D-BU | 5491 | Cylinder Shutoff Solenoid 1 |
| D | L-GN | 5492 | Cylinder Shutoff Solenoid 2 |
| E | PK/BK | 5294 | Ignition 1 Voltage |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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