transmission noise

I'd done a drain and fill in my 07 V8 4wd 4runner and I go for a drive and under medium acceleration through first second and third there is some sort of noise that I can only describe as similar to a heat shield rattle (and a wine from behind the motor at idle, sometimes more prominent...

I've been searching the forum high and low to find a thread covering a similar situation with no avail so I'm making my first post... First off, many thanks to all who contribute on here. I use info from the forum somewhat regularly and greatly appreciate everyone's time and expertise. I have...

I've seen some posts in this regard but wanted to see if there is advice on my situation...noise when accelerating mostly in 4th...changed transmission fluid sounds a bit better but still noise. Any advice on cause? Would transfer case create what I'm hearing? Thanks!