This manual covers the diagnosis of GM's distributorless ignition system from 1984 to 1989. It includes information about the system's components, their functions, and how to diagnose and fix common issues. The manual is written in English and is in a trade paperback format. It was published by AC Delco, a leader in automotive parts and accessories. This item is a must-have for those with an interest in automobiles, particularly GM models from the 1980s.