HI,
I'm new to the board, but have had that exact problem.
Sounds wierd, but look for a blown fuse. I've had it happen with two different fuses:
the one for the brake lights and the one for the electric locks.
Incidentally, I think I still have a short which causes different problens including the shift problem every once in a while. I'm now searching the steering column and behind the dash.
Hope that helps a bit.
LunarVan
in Houston | 
