Rear Brakes Locking up

[gmcchamp99]

Ok. So last night i decided to take my Granade down for a mid night snack. she ran like a champ. Today, figured she would enjoy a nice ride. Get about 5 feet out of the garage and apply my brakes and bam!. the rears lock up. No fluid leaks, plenty of fluid in the cylinder, vacumme hose is fine with vac to it. Cant seem to put a finger on it. Should i start at the rear wheel cylinders or should i get to the master cylinder and portioning valve near the master cylinder? Front brakes dont lock up, just the rears. Pedal travels a little bit more than normal.

[gmcchamp99]

Well, this issue seemed to have solved itself the very next day. I started the car to move it out of the spot i was parked in assuming the brakes were still "Funky" and she rolled out of the spot with ease and the brakes work just as they did before.