*UPDATE* 3/16/2010

Had a chance to work on it today. Went ahead and checked the u joints they look ok and show no play. But I found the driveshaft has alot of play in it. To make sure this wasnt normal I tried the same thing on my dads c1500 and its solid as a rock lol. Anyways here a quick video of the play and what seems to be the exact same noise in the video I took a couple days ago.





So I was at a McDonalds and I pulled up to the window and I hear a klunking noise ecoing off the wall. It stoped rite away when I stoped at the window. But when I pulled to the next window I just let it roll in drive and it did it again. All the way to the next window. It seems to only do it when I let the truck go by it's self or under a very lite load. It doesnt do it under medium or heavy load. And it sounds like its coming from the tranny. Its like a kluning metal on metal noise.

Ill try and get a video of the noise.

 

ujoints would be the first place to start

 

Wow. The McDonald's around here only have two windows.

 

K thats a good cheap place to start. Thx

LOL!

What I was going for was

But when I pulled to the next window I just let it roll in drive and it did it again. All the way to the window...

They need 3 windows for the times they make you pull up and wait 10min for your damn fries. Id call it we fell behind so you have to wait on your food while the people behind you get theres even though you ordered yours first window.

 

Added a short video of the noise.

 

Anyone have a suggestion?

 

torque converter bolt coming loose or cracked flywheel?

 

So what have you checked since starting the thread?

 

I would say u joints but they usually squek when mine go out

 

U Joints they look ok to me. Never delt with a bad one b4 so I dont know what to look for. And ive checked me tranny fluid. Thats about it.