I have a 95 chevy Blazer. 3 button switch. When I push 4hi it blinks 5 times and goes back to 2hi but only in neutral. If I try it several times it will shift to 4low and skip 4hi. I know 4hi shouldengauge even when driving down the road. Not sure what is wrong. I am new here. Please help if you can.

 

Have a look around a bit. There have been several topics in the past week that go over the diagnostics for the NV233 transfer case. Also check out the DIY section for a thread on Non-OBD2 Transfer Case Diagnostics.