Here is what's wrong with my truck. The ABS and brake idiot lights are on and my speedo only works when I get above 25MPH or so. Has this happened to anyone yet? I'm got a hunch but am not sure. Any help would be appreciated. ???

 

Almost without a doubt that will be the speed sensor on the top of the rear axle. I have replaced it twice for the same symptoms.

 

check the wires coming from the sensor also i had one break and that was my problem. if its fine then its the sensor