Chevrolet / Buick LS3 / LS7 / CTS-V 6-Pin Throttle Position / Accelerator Pedal Sensor Connector – OEM 15326829 / 15397577
Direct OEM-specification replacement for the GM 6-pin wire harness connector used on throttle position sensors (TPS) and accelerator pedal position (APP) sensors across Chevrolet and Buick LS-series engine platforms. Cross-references GM part numbers 15326829 and 15397577. Used on LS3, LS7, and CTS-V applications including Corvette, Camaro SS, and Cadillac CTS-V performance platforms.
The throttle position sensor and accelerator pedal position sensor connectors on LS-series engines are located in the engine bay, exposed to heat cycling, oil contamination, and vibration. Connector corrosion or locking tab failure causes the ECM to lose the throttle position signal, triggering reduced engine power mode (limp mode) and illuminating the service engine soon light. These faults are frequently misdiagnosed as a failed throttle body or APP sensor. Replacing the connector is the correct first step when the sensor resistance tests within specification.
| OEM Number | Application |
|---|---|
| 15326829 | GM TPS / APP sensor connector (primary) |
| 15397577 | GM TPS / APP sensor connector (superseded / alternate) |
| Pin Group | Function | Failure Symptom if Open |
|---|---|---|
| Pins 1–2 | 5V reference and ground (sensor 1) | P0120 / P0122 TPS circuit low |
| Pins 3–4 | Signal output and ground (sensor 1) | P0121 / P0123 TPS circuit range/high |
| Pins 5–6 | 5V reference and signal (sensor 2 / redundant) | P0220–P0229 APP sensor 2 circuit fault |
| Attribute | Detail |
|---|---|
| Pin Count | 6-Pin |
| OEM Part Numbers | 15326829 / 15397577 |
| Applications | Throttle position sensor (TPS), accelerator pedal position sensor (APP) |
| Compatible Engines | LS3, LS7, LS9, LSA (supercharged) |
| Compatible Models | Chevrolet Corvette C6/C7, Camaro SS/ZL1, Cadillac CTS-V, Buick performance platforms |
| Terminal Included | Yes |
Q: My Corvette C6 went into reduced engine power mode — could it be the TPS connector?
A: Yes. Reduced engine power mode on LS-series vehicles is frequently triggered by a corroded or open TPS connector rather than a failed throttle body. The ECM logs P0120–P0123 (TPS circuit) or P0220–P0229 (APP sensor 2 circuit) when the sensor signal is absent or out of range. Inspect the 6-pin connector before replacing the throttle body or APP sensor assembly.
Q: What fault codes does a failed TPS connector cause?
A: Common DTCs include P0120 (TPS circuit malfunction), P0121 (TPS circuit range/performance), P0122 (TPS circuit low input), P0123 (TPS circuit high input), and P0220–P0229 (APP sensor 2 circuit faults). Multiple simultaneous TPS and APP codes strongly suggest a connector fault rather than a failed sensor.
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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6 Pin Connectors
