Non wastegate/phaser rattle

[ledftgen2]

Besides having cam phaser and wastegate rattle, I have another rattle that sounds like something hitting a hollow bar. It is most prominent while the truck is cold and just starting to drive. Has any else had this and know/have an idea of where it could be coming from? I’ve crawled underneath and hit the skid plates and exhaust and haven’t found anything loose. Video of the sound

Edit: Here is a better sound clip

 

[stonecrusher]

Check the muffler. Something inside is the culprit

 

[ledftgen2]

Check the muffler. Something inside is the culprit

May be time for a muffler delete

 

[nikhsub1]

I dunno that sounds kinda normal to me...

 

[BBR]

When my OEM muffler developed a loose/broken baffle it sounded like that.

 

[Keith88]

MUFFLER.

 

[ledftgen2]

When my OEM muffler developed a loose/broken baffle it sounded like that.

Did the sound mostly go away when it was warmed up? Thats how mine is but slowly getting worse over time.

 

[BBR]

Initially, then it eventually became continuous. Wasn't terribly noticable when driving but at idle it drove me crazy. Dealer said its a common issue & that it wasn't covered under extended warranty so I went borla muffler/resonator combo.

 

[dragonass23]

That maybe my issue. Thanks is for sharing

 

[McM]

Did the sound mostly go away when it was warmed up? Thats how mine is but slowly getting worse over time.

Mine has been doing the same thing. Getting worse over time. It sounds like a loose clamp/ marbles in a can, but when it warms up after 5 min it goes away. What did yours end up being?