I have a 2000 silverado 2500 and the service 4 wheel light came on and the lights went out on the push buttons. Took it to the dealer to have the code read and they said I needed a transfer case motor. I put that on and the service light went out and the push buttons started working again. You can hear the transfer case shirt and it even gears down in 4 low. When it is on the rack the front tires will spin in wheel wheel drive and once on the ground they have no power. Any ideas what I may need now?
