This manual covers the Hummer Commercial models produced between 1997 and 1998. Known for its exceptional off-road capability, robust construction, and high payload capacity, the Hummer Commercial is a heavy-duty utility vehicle designed for demanding commercial, governmental, and industrial applications. Its engineering emphasizes durability and performance in extreme environments, featuring a powerful 6.5-liter V8 Turbo Diesel engine and a rugged drivetrain. Key attributes include its significant width for stability, high ground clearance, and the availability of features like a central tire inflation system, making it a unique and capable vehicle in its segment.

This comprehensive service and repair manual provides detailed information for all service and repair procedures for the Hummer Commercial. It covers essential areas including powertrain, chassis, electrical systems, and body components. Within these systems, the manual details routine maintenance, diagnostic procedures, step-by-step repair instructions, and overhaul specifications. This resource is designed to assist owners, mechanics, and technicians in effectively maintaining, troubleshooting, and repairing their Hummer Commercial vehicles, ensuring optimal performance and longevity.