I know this problem has already been gone over a million times and I've read several threads with relating problems and followed several helpful links on the topic as well. I have the '89 XLT model with a 302 and AOD. It has the electric shift on the fly option. When I purchased the truck, the 4x4 indicator light was on and has stayed on. The 4low light is flashing and has stayed flashing. Depressing the buttons do nothing, but the truck IS NOT in 4-low. The previous owner did install locking hubs. The front driveshaft turns all the time, but I'm unsure whether or not 4-wheel drive is engaged at all when the hubs are locked, especially since neither of the switchs function. I'm doubting it, although it does seem the truck handles shaky and the gas mileage does seem extremely bad for an EFI. (Less than 250 mpg driving normal wiht 33's) From one of the links, I've read to check a switch or "circuit breaker" in the pass. side kick panel and to check and see if there is power to the dash switch itself. If not, maybe resetting the "circuit breaker" would restore power to it? I've also seen to remove the t-case motor and check where the shift indicator is positioned with possibly moving it to see if any reaction occurs. I've also seen that there is a relay or module of some sort near the t-case that could be bad or is not sending power to the switch that I should check. Do all of these troubleshooting options sound like the right roads to take for this problem, or am I fighting a losing battle with a bad transfer case altogether??? Thanks in advance.