Original 1997 Chevrolet and GMC Dealer Service Manual Set. These Manuals cover the C/K Pickup Models. These were used by the Dealership to Service and repair your Truck. They include information, specifications, procedures, illustrations, diagrams and trouble shooting for your vehicle. Very informative and useful tool that is hard to find since they were not available to the public. They are well worn, soiled and blemished from years of use in the Dealership [see photos]. Book 1 is missing the back cover and the last couple pages of the Index. Book 2 is missing the front and back cover, the first page and last few pages of the Index. Although not pretty, the service information is there and they will serve their purpose.