First post. Denver CO, 2010 Thunderbird 1600. So I got the old lady out from under the cover for the first time this year, and found out I have no rear brakes. Tried pumping them up to try to evacuate some fluid, but no luck. Pedal goes straight to the floorboard everytime. Could this be a master cylinder problem, or am I just not going through the proper motions to change out the brake fluid?