When transmission is in park or drive, the passenger seat rattles

Hi,

The car is likely fine. I have a question. If you place your hand on the back section, does it stop? If not, if you place your hand on the seat portion, does it stop? Also, check to make sure the head rest isn't making noise.

I ask because something may have simply come slightly loose. I would suggest to start where the seat mounts to the floor. There are four bolts holding it. See pic below.

The bolt size should be approximately 14mm. Check to see if they are all tight.

Let me know what you find or if you have other questions.

Take care,

Joe

See pic below.