Hey I have a couple issues that might have been talked about somewhere in this forum but could not find any posts. So I thought I might ask again

I have a 2002 1500 HD (6.0)
First off when I start the truck it makes a strange whining noise for a second then stops. I usually notice it when it has sat for a while like overnight or after I get off work. It will make a slight squeak (like the belt is ready to be changed) then after a couple seconds here comes the whine. It sounds like an old door creaking open, then it stops.
I had heard a fairly similar sound on a Mustang I owned and it was the trans oil pump, but this I am thinking it might be just the clutch fan.
Any ideas? The sound only lasts 2 or 3 seconds then stops.

Secondly is a pretty noticable tapping sound from the passenger side of the engine.
It will speed up as you slowly rev the motor. It sounds just like a lifter tapping but I have been told by a few people that it is actually something wrong with the converter (not the cat) the trans converter.
At times it sounds like either rattling or like I mentioned a tapping sound.
The truck has 108000 miles and is 4 wheel drive.
Thanks for any advise.