We have enjoyed our 3yrs of Rving, but the time has come to sell. No smoking No pets Well maintained Owned since Dec 12, 2012 this dual rear wheel GMC has never been in a motor vehicle accident. It has an Allison transmission We added a Banks Ram Air intake system Banks Ram Air Super Scoop, and Banks power monster exhaust system that allowed for a 20% improvement in fuel consumption. see @ Bankspower.com Oil, and fuel filters were changed as scheduled.Permanent air filter cleaned. Things we added:New tires at 55,000 misBedrug box liner see @ Bedrug.comLine-x rear wheel wells coating see @Linex.com"Corrosion Free" rust inhibitor see @ Corrosionfree.com3M window tintingfifth wheel rails installed AVAILABLE ADD ON:TrailerSaver TS3 air-ride hitchTrailersaver.com$2000 USD New would cost $2795 USD We welcome your questions and inquiriesand will get back to you ASAP.