The GMC Motorhome was a series of recreational vehciles introduced for the 1973 model year. The Motorhome was the only R/V created by one of major automotive manufacturers that was built completely in house, although coachbuilt options and builders could be selected by the buyer. A 23 or 26 foot wheelbase was offered, as were two V8 engine options (6.6L, 7.5L). A total of 12,291 Motorhomes were built before the end of production in 1978.