I am looking into buying a new Chev 2500 Duramax with the Allison Automatic. This will be the first diesel I have owned. I currently have a Dodge 2500 with a V-10. Anyone out there have one and or have had any problems with one ?? I own a 30.5' Hitchhiker II and would like any info on how the Duramax would handle this type of rig, power - fuel economy, ect.