This Body Service Manual provides comprehensive guidance for the 1971 model year vehicles manufactured by General Motors, encompassing Chevrolet, Oldsmobile, Buick, Pontiac, Cadillac, and GM of Canada. It serves as the definitive resource for all GM body styles, excluding the H-Body, and covers a vast array of models from these esteemed divisions. This manual reflects the engineering quality and innovation characteristic of Fisher Body, GM's in-house body manufacturer, and is invaluable for enthusiasts, owners, and mechanics engaged in restoration or routine maintenance of these classic automobiles. The purpose of this manual is to offer detailed procedures for the repair, maintenance, and adjustment of all vehicle body components and systems. It covers essential areas including underbody structures, stationary and movable glass, sheet metal, doors, roof assemblies, tailgates, and all interior trim and upholstery. Additionally, it addresses the body electrical components, such as lighting. This manual is designed to empower users, from DIY mechanics to professional technicians, with the knowledge needed to accurately diagnose and resolve body-related issues, ensuring the longevity and integrity of their 1971 General Motors vehicles.