Standard/OEIn stock
$24.40
10 items in stock
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SEN-2ABS1547• Vehicle Speed Sensor
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GeoBrakes stocks OEM-grade vehicle speed sensors confirmed to fit the Buick Roadmaster, the components that supply vehicle speed data to the Roadmaster transmission control module, ABS system, speedometer, and cruise control simultaneously. Every Buick Roadmaster sensor is direct-fit, calibrated to the correct signal frequency
Standard/OE$24.40
10 items in stock
Select your vehicle to see compatible products and accurate pricing
The vehicle speed sensor on the Buick Roadmaster is a single component whose data feeds multiple vehicle systems at once on your Roadmaster. When it fails on the Buick Roadmaster, the effects appear across your Roadmaster speedometer, transmission, cruise control, and ABS simultaneously, making diagnosis less straightforward than a fault that affects only one system on the Buick Roadmaster.
On older Buick Roadmaster vehicles and most rear-wheel-drive designs, a dedicated transmission-mounted speed sensor monitors output shaft speed on the Roadmaster and serves as the primary reference for the Roadmaster speedometer and transmission control module. On modern Buick Roadmaster 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 Roadmaster, one sensor feeding multiple Buick Roadmaster systems from a single mounting point.
Signal accuracy is the defining specification for a Buick Roadmaster vehicle speed sensor. A sensor that generates the wrong pulse frequency for your Roadmaster control modules produces incorrect speedometer readings, mis-timed transmission shifts, and inaccurate ABS calibration on your Buick Roadmaster, even if it passes a basic resistance test. Every speed sensor in the GeoBrakes catalogue is sourced to the correct signal frequency for the Buick Roadmaster exact year, make, model, and sensor position.
Can a faulty speed sensor affect the transmission on my Buick Roadmaster?
Yes. The Buick Roadmaster transmission control module relies on vehicle speed data to calculate correct shift timing. A failed Roadmaster speed sensor can cause erratic shifting, delayed upshifts, incorrect downshifts, or trigger Roadmaster limp mode.
Will a bad vehicle speed sensor turn on the check engine light on my Buick Roadmaster?
Yes. A failed Buick Roadmaster vehicle speed sensor typically stores fault codes P0500, P0501, or P0502. Depending on the Roadmaster, 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 Buick Roadmaster?
On many modern Buick Roadmaster vehicles, yes, wheel hub sensors serve both the ABS system and vehicle speed sensing simultaneously on your Roadmaster. On older Roadmaster vehicles with transmission-mounted speed sensors, they are separate components. Use the GeoBrakes vehicle selector to confirm the correct sensor type for your Buick Roadmaster.