When I put it in 4H all sorts of rattliing comes from the transfer case. After shifting it off, it will rattle for a mile or less then quit making noise, until I shift into 4wd again. Works though.
Also, I used to be able to pull the 4wd handle to 4L and had to hold it, but it worked. Now, it won't go into 4L.
A side note: a few months ago, all of a sudden the 4wd shift lever went loose-like and there was no engagement. I had a mechanic look at it and he said he adjusted it, and then the 4H worked again, but, not the 4L. Only Spanish is spoken where I am, so communication is tough as I only speak a little Spanish. All this guy does is work on transmissions and he's pretty good at that but I know he didn't take the transfer case apart, just adjusted something.
Anyhow, what could the rattling be caused by?