lately i have been having a problem with my 4WD. i depend on my 4WD where i live, i cant leave home or get home without it in the winter. when i put it in 4 high, it will work perfectly for a few miles, and then both the 4 low and the 4 high lights on the dash start to blink, and then they stop. when they stop, both lights are off. when i switch it back into 2WD after the lights start blinking, they will continue blinking for the rest of the drive. also when the lights start to blink, the 4WD stops working immediately and im back in 2WD. i have done a little research and i think it might be the shift motor on the transfer case. i found this guide. http://www.explorerforum.com/forums/showthread.php?t=123542 do you think this will fix my problem? any help is appreciated.