Metallic rattle when cold

[TSilverado14]

I’ve been dealing with this issue for a while now (2 winters), and could really use some help. When I start the truck in cold weather it makes an awful metallic rattle. It’s noticeable from inside the house, so not quiet at all. I can’t seem to pinpoint where it’s coming from, although it sounds like a heat shield (I’ve checked them). In the summer I have zero issues, just when the weather hits below 40 degrees or so.  Anyone else dealt with this? 

[dieselfan1]

I believe it's the heat shield above the muffler. 

I have this issue too but only when I pull away from my driveway when it's cold. Summer and winter

[TSilverado14]

16 hours ago, dieselfan1 said:

I believe it's the heat shield above the muffler. 

I have this issue too but only when I pull away from my driveway when it's cold. Summer and winter

I appreciate the feedback.  I'll check it again this evening.

[TSilverado14]

I’ve checked the heat shields, still have it. It’s a very rhythmic rattle, not random at all. 

[M1ck3y]

Your video isn't working for me.