For what it's worth - an interesting discussion going on regarding Duramax experiences over on iRV2.com. Don't know if it can be believed, though - don't see any VIN numbers! 
http://irv2.infopop.net/2/OpenTopic?a=tpc&s=089094322&f=356091522&m=7023002444
Rusty

http://irv2.infopop.net/2/OpenTopic?a=tpc&s=089094322&f=356091522&m=7023002444
Rusty
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