Originally Posted by GTyankee
I thought that i had a rattle in that seat or right side door, i took it to the dealership for service & asked about it, turned out that on mine, it was the seat beat buckle hitting against the door post
Same issue i had...rattle with front passenger seat area, BUTTTTTTT, like your`s, same problem found before i went to the dealer, found seatbelt buckle was bangin on the side piller post because passengers aren`t smart enough when they get out of the truck to PUT THE SEATBELT back in the factory position...good thing we dont let THEM drive huhhhh...lol. Dealerships scare me, most of those dealer "parking lot boys" are dumber than sh-t that are allowed to work on your trucks. So i`m VERY glad i found the problem before having to deal with the stupid dealership.
So to the other guy....check ALL your seatbelts first...correct position...?
Put a wrench on the mounting bolts, are they all tight...? (probably are)
Look for wiring harness under seat to make sure its fastend to the seat framework.
Check to see if the jack is tight,(under pass seat) some have had mounting bolt backed off, and then caused a rattle too.
Let us all know what you found when you`ve fixed it...good luck to ya