Just bought a new '06 Duramax crewcab to tow our travel trailer with and so far, it has done well. We actually bought it while in Houston visting over Thanksgiving so we got to tow our travel trailer back to NM with it. I had an '03 6.0L Chevy that I traded for the Duramx because it didn't tow the 8000 pound Cougar without effort. The Duramax doesn't even know the trailer is hooked up! Quite a difference! The fuel mileage isn't what I expected, but the power and ease of towing make the diesel well worth the investment. Actually, we're now thinking of going to a fifth wheel and adding some length since the diesel doesn't seem to have a problem with the added weight. Well, that's about it. . .I'll post some pics of the new Duramax when I get them.