Thumping noise in cabin
Thread Starter
Instructor
Joined: Nov 2011
Posts: 132
Likes: 1
Thumping noise in cabin
I'm looking for any help on this. I'm getting a thumping noise in my 2014 c7 convertible, Sounds like a large rain drop hitting the top every few seconds. It seems to be related to the starting/alarm system because if I press the lock/unlock button or start button it may stop for a short time. Also it can be intermittent.
Thanks
Thanks
Drifting
Joined: Apr 2010
Posts: 1,507
Likes: 76
From: Marshall, Missouri
Could be a seat belt buckle hitting the lock pillar trim panel. I had the exact situation that you describe, thought something on the passenger side top windshield latch was making a knocking noise. Discovered that it was the passenger side belt knocking against the lock pillar trim. You might check to see if yours are making contact with either trim panel.
Racer
Joined: Sep 2019
Posts: 375
Likes: 208
From: Hershey,PA
Could be a seat belt buckle hitting the lock pillar trim panel. I had the exact situation that you describe, thought something on the passenger side top windshield latch was making a knocking noise. Discovered that it was the passenger side belt knocking against the lock pillar trim. You might check to see if yours are making contact with either trim panel.
Drifting
Joined: Apr 2010
Posts: 1,507
Likes: 76
From: Marshall, Missouri
There are retainer clips available that snap over the top opening in the seat belt guides at the top of the seats which will hold the belts away from the lock pillar panels. I believe I got mine from Sandyego Designs (not sure about the spelling but it is some kind of play on San Diego).
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Melting Slicks
Joined: Jan 2014
Posts: 2,789
Likes: 500
There are retainer clips available that snap over the top opening in the seat belt guides at the top of the seats which will hold the belts away from the lock pillar panels. I believe I got mine from Sandyego Designs (not sure about the spelling but it is some kind of play on San Diego).
Drifting
Joined: Apr 2010
Posts: 1,507
Likes: 76
From: Marshall, Missouri
You're welcome. Only downside seems to be that keeping the belts within the guides on the seat backs (which these retainers do) causes significant resistance when extracting the belt from the retractor for latching. The retraction when unbuckling is hindered also. I got used to it and they do keep the belt buckles from banging and damaging the lock pillar trim panels.
Melting Slicks
Joined: Jan 2014
Posts: 2,789
Likes: 500
You're welcome. Only downside seems to be that keeping the belts within the guides on the seat backs (which these retainers do) causes significant resistance when extracting the belt from the retractor for latching. The retraction when unbuckling is hindered also. I got used to it and they do keep the belt buckles from banging and damaging the lock pillar trim panels.
Last edited by F4 Phantom; Jan 29, 2021 at 08:03 PM.
Drifting
Joined: Apr 2010
Posts: 1,507
Likes: 76
From: Marshall, Missouri
Glad yours are not impeding the operation of the belts. Mine seem to retard the retraction of the belts, sometimes requiring some assistance to get them to fully retract. I'm going to check them for burrs on the bottom, could be the problem.
Melting Slicks
Joined: Jan 2014
Posts: 2,789
Likes: 500
Good luck with that and thanks again for the tip.
Racer
Joined: Jan 2020
Posts: 426
Likes: 197
From: Boston