This is an ONSTAR 1998 System Installation Manual, an essential resource for the proper setup and integration of the OnStar system in compatible vehicles. This manual provides detailed instructions for installing the 1998 OnStar system, making it a valuable item for automotive enthusiasts, technicians, or collectors. This manual is designed for a range of General Motors vehicles, explicitly listing compatibility with Cadillac, Buick, Chevrolet, Oldsmobile, Pontiac, and GMC models from the 1998 model year. It serves as an OEM guide for the specific OnStar system released that year. The manual is printed in the USA. This listing includes the ONSTAR 1998 System Installation Manual as pictured.