1964-65 GMC Truck Suburban and Panels Series 1000-2500 Sales Folder. In work or pleasure, you get more done...have more fun with a GMC Suburban. Featues Model 1001, I 1001, and K1001 Suburban. GMC Panels speed up schedules...cost less to operatre. Model 1001, and I 1001 7 1/2 ft Panel. Model 2503 and I 2503 10 1/2 ft Panel. Highlights the GMC interior and bodies. The six cylinder engines, frames, clutch, transmissions, axles, and four driving wheels are covered. Specifications are on the back. Condition: Wrinkled from moisture exposure.