My gearshift selector keeps going out i was in the drve through, put my vehicle in park because i was idling too long, tried shifting back into drive vehcle would not shift, 2 hours later after several angry customers my vehicle shifted into drive, get home to put into park vehicle would not shift to park, so now im stuck in drive, couldnt do anything but sit and wait nothing, so i had to shut vehicle off and doing so vehicle rolled with no brakes hitting vehicle in front of me, luckily it was my vehicle, vehicle has not reverted back to operation still stuck in drive