Okay, we need to start at our power source, the battery. Make sure it is fully charged first. Then check to see if the alternator is charging the system properly. Directions on how to check these things and videos are on our homepage under the DIY section. Since you question the alt, it makes me question the power supply to the different sensors on the transfer case. Also, I need to know if you have the electric shift 4wd or a manual shift 4wd. If it is electric, we need to check to make sure the actuator on the transfer case is getting power when you shift to 2wd. That could be an issue as well as the actuator itself.
Let me know what you find. (And sorry, it sounds like I'm pointing you in the wrong direction, but if there is a power supply issue, all kinds of crazy things can happen.)
Let me know.
Friday, November 1st, 2013 AT 5:29 PM