Rattle that I cant find

It only happens low rpms, and I can not find it. I have searched all the other ideas I have read in old threads and still cant find it. I tried taking a video and you can hear it in the middle and towards the end. if anyone has any suggestion please let me know.

http://s1030.photobucket.com/user/rjp4419/media/Cars/20130821_085341_zps9fce5979.mp4.html


Truck is an 06 6speed if that makes any difference.

 

Had a rattle just like that on my 09 only did it at at low rpms. It was my cat. converter shield on the driver side broke there was a clamp type thing on the end of it that broke off and slide down the exhaust and was resting on the one of the crossmembers. Also check all the heat shields above the exhaust that bolt to the underside of the floor I had a loose one on the pass. side the bolt pulled thru the shield just a little bit I had to put a washer on it.

 

can't really hear it on my work comp, no external speaker...just the little one inside the comp, lol. But my 09 6sp has a rattle if the rpms are too low and you try to accelerate...like trying to start out from a stop in 2nd it is pretty loud...always blamed it on the skid plate or a heatshield but can never find the culprit...

 

Subed.

Mine does the same thing, been trying to find it for awhile now. I couldn't find anything loose with the exhaust.

 

x2... CAT converter clamp and heat shield

 

Thanks to both of you, the bolts holding the driver cat heat shields together where completely gone. Thanks

 

TW doing its magic Glad you found the noise.

 

With every model year of these trucks, my ears get worse, but I notice more rattles.