Vehicle: 2022 1500 Sierra Denali with 6.2
Got 9800 miles. Have 1K miles on a new engine (Main bearing fail, total replacement engine)
Listen to this sound 6.2 Engine Flutter
Link Description: sound is when coasting from 30mph+ down to stop. Right around the 15-20mph mark, it will make the flutter sound. Engine is coasting, will do it when brake is applied and when it’s just coasting to a stop on its own.
Dealership thought it was maybe the exhaust valve failing. Replaced muffler. No change. I definitely feel like it’s coming from engine. Dealership is going to new check the AFM and then hook up microphone to it to try and track it down.
Thoughts anyone?
Thanks !
MJ
Got 9800 miles. Have 1K miles on a new engine (Main bearing fail, total replacement engine)
Listen to this sound 6.2 Engine Flutter
Link Description: sound is when coasting from 30mph+ down to stop. Right around the 15-20mph mark, it will make the flutter sound. Engine is coasting, will do it when brake is applied and when it’s just coasting to a stop on its own.
Dealership thought it was maybe the exhaust valve failing. Replaced muffler. No change. I definitely feel like it’s coming from engine. Dealership is going to new check the AFM and then hook up microphone to it to try and track it down.
Thoughts anyone?
Thanks !
MJ