I got into it today, bled everything after a flush, checked the lines, and took the caliper off.

Same problem, I thought about that rubber line trick cause I had a jeep that did that, line kept fluid pressure in the caliper causing drag. Still have the same problem. Right front caliper is toast, it wont release. I tried cracking the bleeder, and then completely removing the the line as well. Put a big C clamp on it and its really stiff.

I know your supposed to replace stuff in pairs, but when I bought the truck the driver caliper was in really good shape. It was pulling to the right so I replaced the passenger caliper. I didn't have any problems for about 6 months, then the driver caliper went. Since I only put about a 1000 miles on the truck in that 6 month period the passenger caliper was pretty much new. I replaced the driver side only and within a week the passenger went so I again replaced that caliper. Now I have two brand new calipers on it.

One year later (about 3000 miles) the passenger caliper is shot again. I don't get it, I don't park over dirt, the truck has barely any surface rust on the frame, lines are all good, and I drove it maybe 4 times this winter in the slush. I'm pulling my hair out....

NEW QUESTION: Does anyone have a working proportioning valve they can sell? Also, how do you adjust them?

I'm really thinking about adding an S10 proportioning valve to this system and replumbing the brakes with all new lines and rubbers. I love my truck, its in great shape, and I want to make it diesel at some point.

I've replaced the seat with a 93 Toyota 60/40 bench bucket, Pacesetter header, Weber 32/36, Split rear window, Alpine radio, 4 pioneer speakers, American Racing Rims, fresh tires/alignment, fog lights, new grill, air horn, HID headlights on relays, new battery cables, triple gauges in the compartment under the radio, new clutch, new rear main and oil pan gasket, have a sun roof that needs to be installed, new mirrors, LED back up lights, fresh paint on the bumpers..... list goes on and on.

This brake issue is the only thing that's killing me. Really making me consider selling it, but I don't want to pass the problem on to some one else. Doesn't seem right to me.

Only thing left for me to try is the proportioning valve, but if I can't find an OEM style unit, I may have to resort to some redneck engineering....

Thoughts?