OH_5.0
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I recently picked up a 2024 GT Premium 401A with about 8k miles. The car drives great and overall I'm extremely happy with it but I'm chasing a noise from the passenger rear area that is driving me absolutely nuts.
It's somewhere between a creak and a light rattle, almost like a small pebble bouncing around a metal bowl. It seems to be triggered by small vibrations from the road rather than large bumps. I hear it more on rougher pavement and at higher speeds. The sound seems to come from the passenger rear C-pillar area.
Things I've already tried:
Another observation is that the noise seemed quieter and less frequent when my daughter who weighs about 100lbs was in the car. It didn't matter much whether she was in the front passenger seat or either rear seat. Could have been coincidence with the road conditions but I also noticed once that the noise seemed to stop while going around a turn although I wasn't paying enough attention on the direction I was turning but it made me wonder if vehicle loading is affecting whatever is making the noise.
I've seen a few threads here about S650 rear passenger rattles eventually being fixed by the dealership replacing the rear shock but I'm wondering if anyone has experienced this particular type of noise or has any other ideas for what I should investigate.
I'd really like to diagnose this myself if possible before taking it back to a dealer. I had it there once and they said it was the car seat latch covers. Thanks!
It's somewhere between a creak and a light rattle, almost like a small pebble bouncing around a metal bowl. It seems to be triggered by small vibrations from the road rather than large bumps. I hear it more on rougher pavement and at higher speeds. The sound seems to come from the passenger rear C-pillar area.
Things I've already tried:
- Removed and reseated the passenger C-pillar trim
- Added foam behind most areas of the C-pillar trim, all around the airbag mount, etc
- Removed the child restraint/latch cover
- Lubricated and taped the rear seat latches and receiver
- Eletrical tape all of the clips with the C-pillar trim
- Tried driving with the rear seats folded down and seat belts buckled
- Checked the trunk for loose items
Another observation is that the noise seemed quieter and less frequent when my daughter who weighs about 100lbs was in the car. It didn't matter much whether she was in the front passenger seat or either rear seat. Could have been coincidence with the road conditions but I also noticed once that the noise seemed to stop while going around a turn although I wasn't paying enough attention on the direction I was turning but it made me wonder if vehicle loading is affecting whatever is making the noise.
I've seen a few threads here about S650 rear passenger rattles eventually being fixed by the dealership replacing the rear shock but I'm wondering if anyone has experienced this particular type of noise or has any other ideas for what I should investigate.
I'd really like to diagnose this myself if possible before taking it back to a dealer. I had it there once and they said it was the car seat latch covers. Thanks!
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