I think you are on the right track, it has to be your brake pedal switch, or the wiring to it.
Your pedal switch should have one wire that is always grounded and one signal wire that completes the circuit when the switch is engaged (pedal pushed).
The transmission will stay locked and brake lights will not turn on until this switched is engaged. It should be a fairly inexpensive repair, $11 including shipping on eBay. I am sure you can also buy a generic one at any auto parts store.
Wednesday, March 11th, 2009 AT 7:47 PM