This CD rom includes complete reproductions of 2 original printed paper manuals that Chevrolet mechanics used to service vehicles. It includes the 1012 page Light Duty Truck Service Manual 1980 Chevrolet and the 410 page Passenger Cars and Light Duty Trucks Unit Repair Manual (Overhaul) 1980 Chevrolet. In the service manual The CD includes detailed service procedures for lubrication, frame, shock absorbers, front suspension, rear axle and suspension, brakes, engine, transmission, fuel, exhaust, wheels, tires, chassis-sheet metal, electrical system, heater and air-conditioning. In the overhaul manual The CD includes step-by-step instructions for tearing down and rebuilding air-conditioner compressor, front axle differential, rear axle differential carrier, engine, carburetors, clutch, transmission, and steering. With the step-by-step illustrated instructions, specifications, and wiring diagrams on this CD, Valuable resource to restore all 1980 pickup, stake, van, Blazer, Suburban, step van. forward control P-chassis, half ton, 3 quarter ton, 1 ton, 2 wheel drive and 4wheel drive. Covers model numbers C10, C20, C30, K5, K10, K20, K30, G10, G20, G30, P10, P20, and P30. Covers Chevy motorhome chassis covers the mechanical part made by Chevrolet only but does not cover motorhome bodies.