Hey I'm new to the fourm
So I had got a new blazer and I've been having issues with my 4x4 and it blowing fuses each time I get it engaged. But once in a while when I get it switched over to 4 hi or lo and put it in reverse it almost let's a grinding type noise, but only in reverse. It seems to go away after I drive it for a bit, park/shut it off then turn it back on so I'm thinking the tcase isn't fully engaged?? This is the first time I ever heard this noise and I've owned lots of different chevs, Has anyone had this problem before? Or can help me with a direction to look? I'll try to get a video of the noise If it happens again any time soon and post it
Thanks for any help

 

It's a 3 button switch for the 4x4 as well