Are there any cavaties/spaces around the 3rd row seat for something to fall into?

[nodnarb901]

Wierd question I know, but, I purchased a pre-owned 21 tahoe. The previous owner had kids in the back. I know because I have alreaedy pulled out a hot wheels car, colored pencils and snacks.
Whenever I turn left or right I can hear something rolling from left to right near the bottom of the third row seat. I have pulled the trim off around the third row hinges, removed the cargo cover and plastic tray behind the third row seat to see if I can see anything obvious and cant see anything. I'm conviced a chiild may have pushed something down into a crevis somewhere that I cant access.
The noise doesn't happen when accelerating/braking only left to right turns. I even got my boroscope inside a small area in the floor board near the third row seat hinges and didn't see anything obvious.
I don't expect anyone to tell me the cause of the rattle, but wondering if anyone has any pics of a 21 tahoe with the carpet removed so I can see what the floor looks like to see where to search next.

 

[Protect1989]

have you looked in the trunk, under the floor cover? Also may give you better access to under the 3rd row, especially if you have a boroscope

 

[Joseph Garcia]

Maybe I'm missing something here, but why haven't you simply removed the seat itself, and then have a full look underneath, and the ability to look under the carpet around the seat attachment points?

 

[adventurenali92]

My guess would be something was somehow stuffed into the plastic trim pieces that cover the side walls, IE the trim parts where the third row cupholders are. Not sure how any of it disassembles, as I don’t see a storage pocket that’s removable like on the older trucks, however in the older the trucks that side trim piece is where the bottle jack and tire iron is stored. Is there a compartment there on the 21+ models for the bottle jack and tire iron? If so maybe that could also be the source, if something came loose and is rolling around inside the compartment.

 

[nodnarb901]

Thank you everyone for the input. I have removed the cargo tray under the cargo floor and found one piece of gravel hoping that was it. It wasn't. I was able to look
under the third row seats and didn't see anything. I may remove the third row seats this weekend and take a look. I work for a car dealership and am going to have a tech ride with me to help narrow down exactly where the noise is coming from before I start taking stuff apart.

 

[2024 White Tahoe]

Thank you everyone for the input. I have removed the cargo tray under the cargo floor and found one piece of gravel hoping that was it. It wasn't. I was able to look
under the third row seats and didn't see anything. I may remove the third row seats this weekend and take a look. I work for a car dealership and am going to have a tech ride with me to help narrow down exactly where the noise is coming from before I start taking stuff apart.

Have you checked the left side jack storage compartment as suggested above?

 

[nodnarb901]

Have you checked the left side jack storage compartment as suggested above?

I have, I had a tech I work with drive me around while I was in the back. It definetley is somewhere under the third row seat more on the driver's side. Whenever he would make a sharp left or right I could hear it rolling back and forth. sounds more on the driver's side side. We are still hunting the noise down.

 

[nodnarb901]

Finally got my noise figured out. Removed the third row seat and found BBs in this channel under the front third row seat mount. Couldn’t get to them with a tool as they had rolled into an area I couldn’t reach, so I put a magnet in there and made some S turns and they rolled right into the magnet. Noise is gone. Not sure how 3 BBs got in there but that horrible rolling noise is gone now.