ACDelco GM Original Equipment ABS Wheel Speed Sensors are located at each wheel, monitoring the rotation of each wheel, and are GM-recommended replacements for your vehicle's original components. The sensor provides this speed information to the antilock brake control module for the antilock braking function. These sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
Symptoms of a Failing Speed Sensor vs. ABS Wheel Speed Sensor
Some vehicles may use the same part for both a Speed Sensor and an ABS Wheel Speed Sensor, while others may use two different parts. These parts serve different systems of the vehicle and may fail for different reasons - it is important to replace the proper sensor to fix the underlying issue.
SPEED SENSOR
The Speed Sensor(s) measure rotational speed of the transmission shafts. Common failure symptoms include:
Erratic Speedometer Behavior
Harsh or Improper Shifting
Loss of Cruise Control
Surging or Hesitation
Check Engine Light On
Located in 'Electrical'
ABS WHEEL SPEED SENSOR
The Anti-Lock Brake System (ABS) sensor monitors wheel speed. Common failure symptoms include: