1991 GMC Light Duty Truck Unit Repair Service Shop Manual. Original.

This manual includes procedures involved in disassembly and assembly of the components listed in the table of contents. 

Contents:
General Information
Air Conditioning
Steering
Axle
Brakes
Engine
Transmissions

Note: Service manuals can be valuable tools when working on and/or restoring a vehicle. For the uninitiated, keep in mind that these manuals were never meant as restoration manuals, as that is not within the regular scope of work done by dealership service departments (even today).

Condition: Service Manuals are used in Dealership Shops, Independent Garages and in Fleet Environments and thus can reflect such use, most often showing extensive signs of soiling, age, and wear. The information within is still legible and can give valuable insight. The images shown are representative of what is shipped.