Anybody else have this problem. My truck is stranded in a parking lot. 06 with 6K miles on it.
http://www.dieselplace.com/forum/showthread.php?t=133899

Like i replied to that thread the ps pump pressure is used for the braking assist.. Just sounds like an internal problem with the hydroboost itself.

It sounds like that is the problem. Just wondering if anyone knew of any TSB info.