Duramax diesel comes to large GM vans
![None](http://picolio.auto123.com/art-images/37422/main.jpg?scaledown=1024)
To deliver extra grunt and better fuel economy to customers buying large vans for business or RV purposes, General Motors will make its Duramax 6600 turbodiesel available in the 2006 Chevrolet Express and GMC Savana G2500 and G3500 series commercial models.