This is an original 1988 GMC Truck data book. It was put together to be an easily accessed resource of information for the salesmen when helping the customer place an order, answering any questions, or just promoting the line. Included are diagrams, series numbers, model availability, and more for the S Pickup, C/K, R/V, Blazer, Jimmy, Suburban, Astro, Safari, Van, Vandura, Sportvan, Cutaway, Hi-Cube, Step-Van, and Motor home chassis. The tab competitive comparisons are empty, either the dealership didn't add them when they were received or they just were never sent out. Either way was a common occurrence.