Odd rattle
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Junior Member
Joined: Jun 2024
Posts: 1
Odd rattle
C7-get a metallic rattle only at 1300-1400 rpms after car heated up. Automatic transmission. Send to come from middle of car. Can hear equally from both sides with windows down. Any ideas greatly appreciated. AFM & NPP valves seem to be working fine.
Senior Member
Joined: Mar 2022
Posts: 994
From: Idaho
Welcome to the forums. 13 to 1400 could be a vibration or a resonating sound from the exhaust system. You can try to heat it up then lift it up and run it at that rpm with someone underneath checking for that sound.
Super Moderator
Joined: Apr 2006
Posts: 4,220
From: KC, MO area
Welcome to the forum. While not familiar with the underneath side of C7s, Thomas' suggestion sounds like a good idea to me.
Last edited by 73shark; Jun 12, 2024 at 07:39 AM. Reason: Spelling correction
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