Yes, you need to remove the brake drum. What I would recommend is to lift the rear of the truck and see which side is locked up. By doing that, you will know what side to work with. Chances are the rear brake cable will need replaced. It isn't too hard to do.
Check it and let me know what you find so I can help you figure out the best way to deal with it.
Monday, February 1st, 2010 AT 8:09 PM