Noise behind drivers seat

[Cullen Kraus]

So I’ve got a 2019 Silverado RST crew cab. And I’ve noticed a moderate/loud rattle sound coming from the back of the cab or harsh bumps. (I don’t believe it to be the head rests because it did that at first and I took the headrest out and that sound went away so I pulled the posts slightly apart and that noise was gone.) This particular noise seems to favor the drivers side back of the cab and only really happens over harsh bumps such as railroad crossings etc 

[Siebersh]

On 1/31/2019 at 7:05 PM, AMPRG said:

I'm waiting for my first oil change to ask the dealership to fix it. It should happen In the next 3 months. 

I have the same issue with my 2020 

[K455]

I have a Custom TB 2019 20,000 Miles purchased new. This squeaking rattling  noise started about 5,000 miles ago left side in cab by the drivers side door or to the middle of the rear door. I just read all the replies and I looked at the drivers side door when opened up and the door latch that hooks to the door jam.It had dried up grease from the factory so all I had was chain wax for my bikes chain. I sprayed a little in the mechanism after I started hearing the squeaking driving after 5 minutes. If My pick up has been sitting for a while especially if it is cold out the noise does not start right away. I pulled over sprayed the latch mechanism and drove over the bumpiest road I could find the noise without doubt is totally gone. the problem no longer exists 

Edited February 13, 2021 by K455