2001 E-450 front calipers siezed-what now?

[Holiday27]

First trip of the season and I noticed a rolling resistance and brake burning smell. Then I noticed the temp on the tire sensor climbing. Got up to 178! At that point they unsiezed and the temp dropped to normal, drag went away. I had planned to change out the brake fluid before we left but totally forgot, obvious bad move on my part.

Question is should I replace everything or just the fluid and front brake lines?

[pauldub]

Probably should replace the calipers. I had a rear one stick and then unstick but a few months later it was smoking the brake big time. Finally replaced it like I should have when it first stuck.