Shop Owner

[Iwrench]

I have new 2020 Duramax trucks with the Duramax engine. Both trucks less than 500 miles both have the same engine noise when warmed up ( most noticeable) No help at all from dealers on this issue. One dealer said to drive until it breaks then they would know what the problems is. Unacceptable answer for 70 some thousand dollar truck. Anybody else seeing or hearing about engine noise in the these trucks. Does not affect performance - no lights etc. runs great both trucks. Any help would be appreciated.