The truck seems to stop just fine. I took it out last week to try out the ABS on a country road, but result was inconclusive...only had time for one try due to traffic, and the truck stopped so quickly I'm not sure the ABS really triggered. will try again today. Aaron's comment about it just being a hyd valve makes a lot of sense to me, but it doesn't jive with the earlier post of a member whose rv feels normal. I didn't want to muddy up the issue, but besides this, sometimes the rear brakes get much hotter than the fronts when I get out I can smell them. temp gauge showed front rotors at 150F and rears at 450F. I have to go down a steep highway (12%) to turn into my drive, so it is a significant braking event. seems unlikely that both rear discs would be dragging, so I thought maybe the brake booster or master cylinder were related. sorry I'm turning the tractor board forum into a truck brake forum!