Broken Wheel Sensor Identification

Had dash lights flashing. 4Hi/4lo,ABS, TCS. No CEL. Looked under the truck and found the Left Rear sensor had broken off. Went to the shop and we could not find the broken part in his system. Searching came up with nothing. Looking up ABS sensor shows Front and Left or rear center. The attached picture is from the front.

 

Looking at rock auto the sensors are side specific but not front to rear specific; meaning that a left side one works on the front and rear.

https://www.rockauto.com/en/catalog...brake+&+wheel+hub,abs+wheel+speed+sensor,1912

 

Once you replace, install sensor guards so you don't have to worry about this happening again

 

Truck definitely has a wheel speed sensor on all four corners at each wheel/tire combo. My assumption is they are all the same as the just count the teeth of a gear rotating. It sees/creates a pulse each time a tooth of the gear passes by.

All 4 report data to the ABS ecu to drive speedometer, odometer, and monitor wheel slip/traction control ect.

Are you just saying you are having trouble finding a replacement sensor for the left rear?