GMC

Motorhome Chassis

1973 – 1978 United States 0 builds
MODEL HISTORY

The Story of the Motorhome Chassis

This purpose-built Class A motorhome was introduced for the 1973 model year as an unusually ambitious factory-built recreational vehicle at a time when most rivals were assembled on truck chassis by outside coachbuilders. Rather than adapting an existing commercial platform, it was engineered from the ground up with a low-profile body, front-wheel drive, and a flat interior floor that helped create a car-like driving position and a more spacious living area than many contemporaries. That advanced packaging, along with its distinctive styling, gave it a reputation as one of the most innovative RVs of its era.

The model entered production in Pontiac, Michigan, and quickly became known for a series of distinct interior layouts and coach names offered across its run. Early examples established the basic formula, while later years brought incremental updates and special editions. One notable mechanical change came in 1977, when the powertrain was revised after the original large-displacement engine was no longer available. Despite that change, the overall concept remained the same: a factory-engineered touring coach with a low stance, independent character, and a very different feel from the typical truck-based motorhome of the 1970s.

Production ended in 1978 after a six-model-year run. Even after discontinuation, the vehicle developed a strong enthusiast following because of its unusual engineering, distinctive shape, and relative scarcity. It has remained a favorite among collectors and RV historians as a landmark example of Detroit applying full automotive engineering to a motorhome rather than treating it as a simple body-on-chassis conversion.

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