Headliner Bubble

The headliner above both driver and passenger seats bubbled on my 13'

It wasn't noticeable unless you pushed up then it would flex and pop back down. Was like that from day 1 so I ignored it for a while. Decided to bring it up today while I was in for an oil change. It will be replaced under warranty, but curious if anyone else has experienced this.

 

pictures?

 

I thought our headliners were one thick piece of molded felt??

 

Never seen that on these trucks. That would be annoying.

 

you wouldn't be able to tell from pictures. looks normal. It is one molded piece but it is not snug to the roof. there is air behind it. o well i may be the only one. doesn't hurt anything, but the truck is new and if they'll replace it I'll let them.