I just had the exact same thing happen to me. I changed the sensor and it didn't help. Everything i been reading and testing, points to the FCM (body controller). This costs about $300, plus you have to have it programmed.

 

hey hey look here theres a fuse in the engine bay that supplies all of this I know this I took all the engine fuses out one day when working on it. I left one out theirs actually two small ones and one of them supplies power to abs spedo everything you stated ...I was the same way what the hell ?

 

I started the truck after working on it , all seemed fine then when I put it in gear and go forward no spedo the lights were still on an so forth pop that fuse cover and take a quick look

 

I have 3 fuses for the FCM , and they are all good.