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PCM Connector: Red (C2) 1998-99
This section contains the C2 (Red) PCM connector pin outs. To navigate to a different PCM connector, use the links below:
| C2 (Red) PCM 32 Pin Connector | ||
|---|---|---|
| Pin | Wire Color | Description |
| 1 | --- | Empty |
| 2 | White | Canister Vent Solenoid Control |
| 3 | --- | Empty |
| 4 | Yellow w/ Black stripe | 2-3 Shift Solenoid Control |
| 5 | --- | Empty |
| 6 | Light Green | 1-2 Shift Solenoid Control |
| 7 | Brown | PWM TCC Solenoid Control |
| 8 | Black | Injector #1 Control |
| 9 | Dark Blue w/ White stripe | Injector #8 Control |
| 10 | Brown | EGR Pintle Position |
| 11 | Light Green w/ Black stripe | Injector #2 Control |
| 12 | Red w/ Black wire | Injector #7 Control |
| 13 | Light Green w/ White stripe | Idle Air Control (IAC) B High |
| 14 | Light Blue w/ White stripe | Idle Air Control (IAC) A High |
| 15 | Black w/ White stripe | Injector #5 Control |
| 16 | Yellow w/ Black stripe | Injector #6 Control |
| 17 | --- | Empty |
| 18 | --- | Empty |
| 19 | Dark Blue | Knock Sensor Signal |
| 20 | --- | Empty |
| 21 | Light Green | Manifold Absolute Pressure (MAP) Signal |
| 22 | Tan | Intake Air Temp (IAT) Signal |
| 23 | Yellow | Engine Coolant Temp (ECT) Signal |
| 24 | Dark Blue | Throttle Position Sensor (TPS) Signal |
| 25 | Dark Green | Fuel Tank Vacuum Sensor Signal |
| 26 | --- | Empty |
| 27 | Yellow w/ Black stripe | TFT Signal (Automatic Transmission Only) |
| 28 | Yellow | Mass Air Flow (MAF) Sensor Signal |
| 29 | Light Green w/ Black stripe | Idle Air Control (IAC) B Low |
| 30 | Light Blue w/ Black stripe | Idle Air Control (IAC) A Low |
| 31 | Light Blue w/ Black stripe | Injector #4 Control |
| 32 | Pink w/ Black stripe | Injector #3 Control |
Safety Precautions
Here are some very important safety precautions when testing the wires coming out of the PCM connectors.
- If one or any of the wires on your GM vehicle DO NOT match the color stated in the Pin Out Charts, then you should not use the Pin Out Charts in this article. Why? Because this is the clearest indication that these ARE NOT the Connector Pin Out Charts for your particular vehicle.
- Never probe the front of the connector.
- You should use a wire piercing probe and probe the wire a few inches away from the connector.
- To see what this tool looks like: Wire Piercing Probe.
- You should use a back probe.
- You should use a wire piercing probe and probe the wire a few inches away from the connector.
- This is a FLASH unit and requires reprogramming if replaced with a new one or used one.
- Read the Disclaimer.
