1990 GMC Light Truck S/T Models Service Shop Repair Manual. (Sonoma/S-15 Jimmy) Original.

This service manual contains diagnosis, on-vehicle maintenance and light repair for Light Duty Truck Models S-Truck. Fuel and emissions related components for throttle body injection vehicles are covered in a separate manual (NOT Included). Procedures involving disassembly and assembly of major components for these vehicles are published in a separate Truck Unit Repair Manual (NOT Included). Wiring diagrams and electrical diagnosis for these models are also published in a separate Electrical Diagrams and Diagnosis Manual (NOT Included). 

Contents:
General Information
Heating and Air Conditioning
Frame and Cab
Steering, Suspension, Wheels and Tires
Propeller Shaft and Axle
Brakes
Engine
Transmission and Clutch
Electrical
Accessories
Body
Index

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.