Smokey Duramax aka "Durtymax"

My 03 GMC Durtymax 2500 4X4 Extended Cab smokes like a bonfire with
wet grass at idle. It cleans up at cruise and gets great mileage
otherwise. But let it idle for a few minutes and you may think the
swat team is smoking out a bad guy. Anyone ever heard of this? If so
your help is appreciated. I have had it back to dealer twice and they
have not offered any suggestion.

Thanks,
Matt

intake gasket going or possible ring problems
<maxfrix RemoveThis @yahoo.com> wrote in message
news:e440ec9a-5694-45b2-aa0d-c2232a355b42@k2g2000hse.googlegroups.com...
> My 03 GMC Durtymax 2500 4X4 Extended Cab smokes like a bonfire with
> wet grass at idle. It cleans up at cruise and gets great mileage
> otherwise. But let it idle for a few minutes and you may think the
> swat team is smoking out a bad guy. Anyone ever heard of this? If so
> your help is appreciated. I have had it back to dealer twice and they
> have not offered any suggestion.
>
> Thanks,
> Matt