Original 1990 GMC Truck Data Book. This Dealer Sales Reference Book covers the Light Duty Truck Models. This was used to educate Sales Staff on the Truck Models and to help Customers with their purchase. It highlights the features, options and specifications of the Light Truck Models which include S-10, Pickup, Suburban and Van Models. The front has Data Sheets for the 1991 Sonoma and S-15 Jimmy Models. This large and informative Dealer Only item is in the original binder and is in good condition with minor wear and soiling [see photos].