ok guys n gals
the three amigos in my truck have been on for a while now never really bothered me that much until recently when i had some time to look into it
so ive been to and back through alot of the threads and dont seem to get it
my shuttle valve checked out ok no loose connection on it or the whole module everything is in great shape
no break fluids leaks around the module either
so what is it or what else could it be
thanks lads

 

Usually the leak is inside the ABS modulator. Brake fluid gets past the o-rings and contaminate the switches inside. The corrective measure is to replace the o-rings inside as well as the switches and also bypass a connector inside that is inside.

Easy enough if you are careful. Some people do it with the modulator in place, I chose to remove it completely and work on the workbench.

 

Thanks much