Hey Tommy, I didn't find anyting out. I did take another 97 Expy out for a ride, and the light stayed on solid. Just for kicks and giggles, I took mine into a gravel parking lot, switched into A4WD and put the hammer down. I did nothing but spin in a circle! No front wheel engagement whatsoever! So I guess it's screwed! I have not had it scanned, this is gonna be my only result I'm afraid. I have and can fix just about anything, ............ Except this damn feature on this vehicle! I'll keep digging, Let me know how you make out!