Have a quick question for anyone out there. -I have a little problem with my brother's 99 chevy z71. It is the 90s body style and has the 4X4 switch on the dash. When we tryed to put it in 4X4, the transfer case wouldn't kick in and the lights on the switch flashed. After some trial, we finally got it into 4lo. We got it back into 2WD, got it home and put a new switch in on the dash. The new switch won't light up, but it does have power to it and no fuses are out. I was thinking the new switch could be bad, but I also think maybe there's another problem such as the actuator on the t-case. Anyone have any thoughts?