Has anyone ran into this problem ? I thought my hydroboost was giving me a soft brake and ABS light so I swapped one out at CARQUEST. The one I took home is 1/4 in shorter on the actuater rod coming from firewall preventing brake switch from being OFF . They sent the core back and now that a shop owner told me he needs to purge the system , I don't even think the hydroboost was bad as it was replaced with a reman just three years ago and was not leaking . This is a tough spot as we need our 03 to haul dirt and tear out on our next job #@$%!