aftermarket ABS speed sensor?

I need wheel speed sensors, right and left, for a 1995 K-1500 4x4 z-71 w/5.7 v-8. [I was getting an abs activation that came on when not called for,so I took the sensors out and cleaned them and the abs quit coming on during low speed, but now when I hit 15 or 20 mph the abs light comes on.] Do they make an aftermarket sensor or are they dealer only? I am getting this truck ready to sell and I want to save as much $$ as possible. Thanks for any info!!

They make aftermarket sensors that are way cheaper than dealers. Iam not sure that is your problem. Try checking the resistance of the wheel sensor with a Ohm meter should be around 800 to 1400 ohms. you might have one bad sensor or another problem. Iam not sure if you can access the ABS codes without a scan tool you might try jumping the A and H trrminals on the aldl connector and count the flashes with the key on.