AUTOMOTIVE REPAIR SHOPS (SIC 753) Establishments primarily engaged in the repair of automotive tops, bodies, and interiors, or automotive painting and refinishing. Also included in the industry are establishments primarily engaged in customizing automobiles, trucks, and vans, except on a factory basis. Those engaged in customizing automobiles, trucks, and vans on a factory basis are classified in Manufacturing, Industry Group 371. Establishments primarily engaged in general automotive repair, such as engine repair shops (except industrial truck engines), general repair and service garages, and diesel engine repair shops. Establishments primarily engaged in specialized repair of individual engine components, not elsewhere classified, are classified in Industry 7539. Establishments primarily engaged in repair of motorcycles are classified in Industry 7699. Establishments primarily engaged in the installation, repair, or sale and installation of automotive exhaust systems. The sale of mufflers, tailpipes, and catalytic converters is considered to be incidental to the installation of these products. Establishments primarily engaged in repairing and retreading automotive tires. Establishments classified here may either retread customers' tires or retread tires for sale or exchange to the user or the trade. Establishments primarily engaged in the installation, repair, or sale and installation of automotive glass. The sale of the glass is considered incidental to the replacement. Establishments primarily engaged in the installation, repair, or sale and installation of automotive transmissions. The sale of transmissions and related parts is considered incidental to transmission installation or repair. Establishments primarily engaged in specialized automotive repair, not elsewhere classified, such as fuel service (carburetor repair), brake relining, front end and wheel alignment, and radiator repair. Establishments primarily engaged in automotive welding are classified in Industry 7692.