Chevrolet G-Series

The full-size van the Express replaced, built with remarkably little change for a quarter of a century and still present in large numbers as campers, workshop vans and conversions. The engine sits inside the cabin under a doghouse between the seats, which is the dominant practical constraint on every job: access, not diagnosis, is what takes the time. Engines are the small-block V8s and the 4.3 V6 shared with the pickups of the same years, along with the 6.2 and 6.5 diesels, so truck material applies throughout. Very many were sold as cutaway or chassis-cab units and carry a second manufacturer's body and wiring, which is not GM's and is not documented here.