Approaching a stop sign after a bit of freeway driving and I lose my power steering and my brakes. I have to pump hard a few times to get them back. I'm guessing my hydro-boost is shot. '99 K2500 454. Best plan of action? I don't do much of my own work on cars. New hydro-boost? Can they be rebuilt? What can I expect to pay? Thanks. This has only happened a couple of times in about 1000 miles of driving, but it's a bit unnerving with an 8000# trailer behind.