1969 (1970*) GMC Trucks School Bus Chassis Sales Brochure. Get more mileage from your operating budget with GMC School Bus Chassis. Tailor a GMC school bus chassis to fit your needs. Short on space? GMC pusher chassis is the perfect big school crowd pleaser. Solve short-run problems with GMC Handi-Bus, Suburban, or Value Van models. Seven gas and one diesel engine available. Specification on back. Good, condition with minor wear and soiling. There are 3 holes punched along spine for a binder. *ADV. 725--(7-69), may apply to 1970 models.