Originally Posted by Tenn01PSD350

Probably going to be the hose or brake line. I just went through this with the wife's truck. Replaced driver side caliper which was sticking and still no fix. Best way to check this is jack up that side, pull the wheel, and pump up the brake. If the caliper is sticking, try opening the bleeder. If that frees up the rotor. it is the hose. Another way to check is to pump up the brakes until it gets stuck or drags, then let it sit for five minutes. If that frees it up then it is likely the hose/line. A stuck pin or caliper will not un-stick itself.

I know this does not make any sense and is not even mentioned in the manual. Our truck was doing the same thing and got worse the faster I went. Got hot and smelled. New hose and good as new. Seems the inner lining can collapse and keep pressure on the caliper. Hope this helps.