Original 1979 GMC Truck Dealer Chassis Service Manual Set. These Manuals cover the Light Duty Models [Series 10 thru 35, including JIMMY, SUBURBAN, VAN and P Models]. These are what the Dealerships used to service and repair your truck. It has information, illustrations, diagrams, specifications and procedures to maintain your vehicle. Very useful and informative tool for the GMC Owner which was not available to the public. Good condition with normal wear, soiling and blemishing from use in a Dealership [see photos].