GeoBrakes stocks OEM-grade vehicle speed sensors confirmed to fit the Gmc S15, the components that supply vehicle speed data to the S15 transmission control module, ABS system, speedometer, and cruise control simultaneously. Every Gmc S15 sensor is direct-fit, calibrated to the correct signal frequency
The vehicle speed sensor on the Gmc S15 is a single component whose data feeds multiple vehicle systems at once on your S15. When it fails on the Gmc S15, the effects appear across your S15 speedometer, transmission, cruise control, and ABS simultaneously, making diagnosis less straightforward than a fault that affects only one system on the Gmc S15.
On older Gmc S15 vehicles and most rear-wheel-drive designs, a dedicated transmission-mounted speed sensor monitors output shaft speed on the S15 and serves as the primary reference for the S15 speedometer and transmission control module. On modern Gmc S15 front-wheel-drive and all-wheel-drive platforms, wheel hub sensors serve the dual function of ABS speed sensing and vehicle speed data delivery on the S15, one sensor feeding multiple Gmc S15 systems from a single mounting point.
Signal accuracy is the defining specification for a Gmc S15 vehicle speed sensor. A sensor that generates the wrong pulse frequency for your S15 control modules produces incorrect speedometer readings, mis-timed transmission shifts, and inaccurate ABS calibration on your Gmc S15, even if it passes a basic resistance test. Every speed sensor in the GeoBrakes catalogue is sourced to the correct signal frequency for the Gmc S15 exact year, make, model, and sensor position.
Can a faulty speed sensor affect the transmission on my Gmc S15?
Yes. The Gmc S15 transmission control module relies on vehicle speed data to calculate correct shift timing. A failed S15 speed sensor can cause erratic shifting, delayed upshifts, incorrect downshifts, or trigger S15 limp mode.
Will a bad vehicle speed sensor turn on the check engine light on my Gmc S15?
Yes. A failed Gmc S15 vehicle speed sensor typically stores fault codes P0500, P0501, or P0502. Depending on the S15, it may also trigger ABS, traction control, or transmission warning lights simultaneously.
Is the vehicle speed sensor the same as the ABS wheel speed sensor on my Gmc S15?
On many modern Gmc S15 vehicles, yes, wheel hub sensors serve both the ABS system and vehicle speed sensing simultaneously on your S15. On older S15 vehicles with transmission-mounted speed sensors, they are separate components. Use the GeoBrakes vehicle selector to confirm the correct sensor type for your Gmc S15.