I have a 01 S-10 Crew Cab, can shift to 4 wheel low ok.. but when you try to go to 4 wheel hi the light doesnt light and it stays in 2 wheel hi, the light on 4 wheel hi will flash when in netural and shifting to 4 wheel low. when shifting from 4 wheel low back to 4 wheel hi it goes right back to 2 wheel hi.....this is v6 with auto trans. and dash mounted electric shift. 29.000 miles. has not been used Off-Road or Mud ETC. hiway driven only.. the 4 wheel hi has worked in the past I checked the fuse it was ok, not sure if the 4wheel hi is Engaged in the transfer case or just the front diff, is locked by a solenoid (there is a sol. in the front Diff.) Qwner manual has very little info on 4 wheel drive. TY

HEARD ABOUT THIS FROM A FEW DIFFERENT PEOPLE, ON A COUPLE OF THEM IT WAS THE ACTUAL DASH SWITCH, ALOT OF THE FULL SIZE TRUCKS AND SUBURBANS HAVE THE SAME PROB....HOPE THIS HELPS

are you sure its just not the light that went out? ive seen that a lot