Chevrolet Blazer Vehicle Speed Sensor in US

The vehicle speed sensor on the Chevrolet Blazer is a single component whose data feeds multiple vehicle systems at once on your Blazer. When it fails on the Chevrolet Blazer, the effects appear across your Blazer speedometer, transmission, cruise control, and ABS simultaneously, making diagnosis less straightforward than a fault that affects only one system on the Chevrolet Blazer.

Signs of a Failing Vehicle Speed Sensor on the Chevrolet Blazer

• Speedometer on your Chevrolet Blazer reading zero, displaying erratically, or showing an inaccurate speed
• Harsh, erratic, or delayed transmission shifting on the Blazer, the TCM uses speed data to determine shift points
• Cruise control on your Chevrolet Blazer refuses to engage or cuts out unexpectedly during use
• ABS or traction control warning lights illuminated on the Blazer dashboard
• Check engine light on your Chevrolet Blazer with stored codes P0500, P0501, or P0502
• Blazer transmission entering limp mode, locking into a single gear to prevent damage

Transmission-Mounted vs. Wheel-Mounted Speed Sensors on the Chevrolet Blazer

On older Chevrolet Blazer vehicles and most rear-wheel-drive designs, a dedicated transmission-mounted speed sensor monitors output shaft speed on the Blazer and serves as the primary reference for the Blazer speedometer and transmission control module. On modern Chevrolet Blazer 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 Blazer, one sensor feeding multiple Chevrolet Blazer systems from a single mounting point.

Why GeoBrakes for the Chevrolet Blazer Vehicle Speed Sensor

Signal accuracy is the defining specification for a Chevrolet Blazer vehicle speed sensor. A sensor that generates the wrong pulse frequency for your Blazer control modules produces incorrect speedometer readings, mis-timed transmission shifts, and inaccurate ABS calibration on your Chevrolet Blazer, even if it passes a basic resistance test. Every speed sensor in the GeoBrakes catalogue is sourced to the correct signal frequency for the Chevrolet Blazer exact year, make, model, and sensor position.

Frequently Asked Questions - Chevrolet Blazer Vehicle Speed Sensor

Can a faulty speed sensor affect the transmission on my Chevrolet Blazer?

Yes. The Chevrolet Blazer transmission control module relies on vehicle speed data to calculate correct shift timing. A failed Blazer speed sensor can cause erratic shifting, delayed upshifts, incorrect downshifts, or trigger Blazer limp mode.

Will a bad vehicle speed sensor turn on the check engine light on my Chevrolet Blazer?

Yes. A failed Chevrolet Blazer vehicle speed sensor typically stores fault codes P0500, P0501, or P0502. Depending on the Blazer, 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 Chevrolet Blazer?

On many modern Chevrolet Blazer vehicles, yes, wheel hub sensors serve both the ABS system and vehicle speed sensing simultaneously on your Blazer. On older Blazer vehicles with transmission-mounted speed sensors, they are separate components. Use the GeoBrakes vehicle selector to confirm the correct sensor type for your Chevrolet Blazer.