Original 1987 Chevrolet Truck Dealer Service Manual Set [Service Manual & Unit Repair Manual]. These Manuals cover Medium Duty Truck Models [except Steel Tilt Cab]. These were what the Dealerships used to service and repair your truck. Very informative and useful tool for the truck owner. Hard to find since they were not available to the public. Good used condition with normal wear, blemishing and soiling from years of use in a Dealership [see photos].