Rear lower compartments provide space for generators and propane tanks. GMCs were optionally supplied with generators from Onan in 4,000 watts and 6,000 watts, many of which are still in service. There were no driver's or passenger's doors at the front of the vehicle. A single door amidships on the right-hand side provided access to the main passenger compartment. At the back of the vehicle, the entire rear body panel could be removed by loosening the bolts around its edges. This allowed beds, appliances and other bulky items to be installed or removed.