99 Blazer won't go into gear

Automatic transmission won't shift into D, R, L sometimes. I notice the 4x4 Lights on the dash are working intermittantly now, sometimes they work, sometimes they don't. Any7one else have this problem?

Also notice the Shift indicator Lights (PRD21L) are not on nor are the Odometer lights. I asked my wife about, she said they come on and off at times?? Would this have anything to do with it?