the abs i had on my old 92 worked great, everytime i hit the brakes when i had it in 2wheel drive on a slick surface the fronts would lock up and the limited slip in the rear with abs would push me down the highway. its a fun ride on a snow covered road.

but yeah sounds like a propotioning valve is bad

 

well just put new abs sensor and it's still doing it.any other thing i can try?

 

is the proportioning valve hard to change?

 

i believe it is part of the master?? on these trucks, but i'm not sure, my truck is no where near stock


i've got a junction block on mine but for some reason i cant find it on autozone or oriellys websites??????? but i know it has some sort of screw in valve thingy lol on it.

 

It's not hard to change, just hard to find. I got mine from the junkyard.

 

Thanks for all the advice everyone i'll try my local junkyard i know there is like 30 of these trucks there.

 

Check to see if your drums are warped. Also check to see if the front calipers are working properly. Without front brakes you will slide your rear breaks to a stop all the time. Any automotive fluid, grease, oil, or brake fluid may cause your rear brakes to be sticky and grab.