Hello I need Help. I have a 04 s 10 pickup that won't go into 4hi. It will go in 4 lo good .When I press 4 hi both hi and lo lights blink then it goes back to 2 wheel drive. When I put it in 4 lo then push 4 hi it goes to 2 wheel drive. Anyone having the same problem??

After spending a good while reading answers about four wheel drive problems I thought I would start out with the easy fix first and that was to unhook the battery to reset the computer. I unhooked it for about 15 min hooked it back up started the truck and ran it thru the gears then put it in to 4 hi . It went right in and all lights work fine now.. Hope this helps