The Mitchell 1 2023 Emission Control Application Guide is a resource for any shop that does emissions testing and/or repair. The guide is for domestic and import cars, light trucks, vans (diesel engines), and Class ‘A’ motor homes with gasoline engines, model years 1966 to 2023. Specific content features in the 2023 edition include an emission application table, engine displacement conversion charts, emissions control visual inspection procedures, approximately 40 years of domestic and imported basic ignition timing specifications, 1980-2022 maintenance reminder light reset procedures, the latest EPA emission recall bulletins, and a quick reference listing for major systems, devices, and components.