2005 Chevy Sierra Diesel Duramax LLY - Backfiring
 

Hi,

I have a new Duramax with 2000 miles and it seems that under certain throttle conditions - half throttle and shifting from 3rd to 4th the truck will sometimes backfire once or twice in a row. Has anyone heard of this problem?

My neighbor has the same truck, engine and model year and is also having this problem.

Dusty R.