Had a shift problem with vehicle stuck in park, Used the pen trick to get home. It was the brake stop switch on brake pedal. Problem solved. Worked for a week fine, car all of a sudden gets stuck in park again, now when bipassed with pen the car is stuck in limp mode will not shift. No spills on Floor shifter, brake switch is good. Any suggestions???? I think its the floor shift module?? Any insight would be greatly appreciated! Thanks Rick