something else you may want to check are the parking brake cables... depending on where you live these can tend to lock up once they start to rust a little. I had the same issue of one rear brake locking up (not fun with a locked axle as one brake locking up causes the entire rear axle to lock up) and it was because my passengerside cable had frozen and kept the shoe pressed out most of the way so just a tiny bit of rear pressure and it locked it right up. Thankfully NAPA carries the cables for my truck at about 18 bucks each side.
Now my girlfriends '03 has a frozen driverside cable that I've got to replace, just the a little bit of wear on the cable and the winters here destroy things. It'll be real nice once I get rid of the drums completely and dont have to worry about hte springs and other parts inside rusting out and falling apart anymore. We just had to replace the adjusters in her drums because the star wheels froze and one of the internal adjuster cables snapped and the lower part of it started rolling around in the bottom of the drum, talk about a really nasty sound...
Welcome Visitor! Please take a few seconds and 
