Google the worhorse brake recall info on seized calipers it will give you some tips. If you go to NAPA website and look up your brake parts under the part description there is a line "more info" it gives good tips on troubleshooting, I don't know how to create a link or I would post it. I have a 2003 Pace Arrow on workhorse chassis the brake recall was done and 11 months later I had another sieze. I did the job myself and found the dealer did not change and flush the brake fluid. I used the new DOT 3-4 synthetic by Valvloine. IT IS APPROVED FOR THE OLDER SYSTEMS! it has a higher boiling point and resists moisture. I will cahnge and flush every 2 years
