Explain more why you "couldn't". What exactly are you doing? I assume you have the electric 4x4 shift? Yet another reason I'm getting the stick. Things seem to stick a little more in cold weather, but 45 really isn't that cold. Your best bet is to try and do it while rolling slowly (1-3 mph) with the transmission in neutral. If that doesn't work, try the same thing but glide backwards very slowly. It should definitely go in using this method, however if you have the electric tcase shifter and it still won't go in, it might be a problem with the actuator, in which case I'd have the dealer take a look.