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Old 11-10-2022, 11:30 AM   #1
Xyebo
 
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Drives: '23 1SS 1LE | '18 1LS V6 [sold]
Join Date: Jul 2020
Location: Los Angeles, CA
Posts: 114
Question Help diagnose the rattle coming from my V6 exhaust (non-NPP)

Hey, all


I have a 2018 V6 with a non-NPP exhaust system.


I started noticing a weird rattle coming from my exhaust area under certain conditions.
  • When I cold start, I hear the rattle as the RPMs go down at around 1500 RPM mark
  • Randomly, for a second or two, as I lift off the gas pedal in-between 1500 and 3000 RPM
See the video illustration in the link. At 0:04, you hear the start-up rattle that goes away. At 0:13 and 0:27, you hear a random rattle at low RPMs on/off throttle.





I won't be able to jack up the car for a few days to see if anything got lose.
What could be the culprit?

Last edited by Xyebo; 11-10-2022 at 11:54 AM.
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