I use my 2004 2500 to tow a travel trailer and I'm considering the purchase of a portable generator for use when dry camping. I'm wondering if it is safe to haul the generator (with gasoline in the tank) in the bed of the Avalanche. Also, would it be safe to carry extra fuel for the generator in the bed of the avalanche. My concerns are gasoline fumes getting into the passenger compartment when driving with the top of the bed closed up. Also concerned about crash safety. Is anyone doing this? What are your thoughts and experience?