I was up in the mountains this past weekend and my boyfriend stepped on the e-brake to look at something. we release the e-brake, put it in gear and the left rear brake is locked up.. we couldn't go forward only backwards. Once we got down to flat ground we took the tire and drum off. Emptied out some brake shavings and put the adjuster screw (to sure if that is the right word) all the way loose. That seemed to fix it. I accidentally hit the e-brake getting into my truck and had to take it all off again today. my e-brake light is still on even though it feels as if it is released all the way. I use my e-brake a lot so i don't know if it would be freezing up. my shoes are fine and don't look like they need to be replaced. maybe its adjuster screw?

 

there is a switch on the e brake mechanism itself , sometimes they become loose from vibration over time .
just release e brake , adjust the free play until the light turns off and tighten lock nut