Our E450 is a 2002 chassis under a 2003 Jayco. We've had one set of front brake calipers stick. Well, one caliper and I replaced both. The prev owner and I have had REAR calipers stick also. In our years, the front calipers are mounted on slide bolts, not the slide wedge retainers Ford used to use. BUT the rears are still on the wedges. Clumsy to work on, and I believe more prone to slide-related sticking.
Any brake work do, replace the Hoses. You can replace them pre-emptively, but DO NOT let the Master Cylinder drain dry. You'll need your ABS re-programmed.
