Before replacing the TCCM my truck had locked up in 4hi but lights on dash switch worked....now the service light is off but the truck is locked in 4lo. lights on switch not working at all now. So i know i will need to get the new TCCM reprogramed by the dealer! but do you think the switch is bad now or just not lighting up until i get the new TCCM reprogramed! Before replacing the TCCM the encoder motor and actuator where moving or aooeared to be functioning. The truck was in 2wd then it droped to 4hi so i just replaced the TCCM and as stated its now in 4lo and nothing else is functioning!