This GM 4.0L/4.6L Engine Mechanical System Manual Guide Book is a must-have for any Cadillac or Oldsmobile owner. It contains comprehensive information on how to maintain and repair your vehicle’s engine.

With detailed diagrams and step-by-step instructions, this manual covers all aspects of the engine mechanical system. Whether you are a professional mechanic or a DIY enthusiast, this guide book will help you keep your vehicle running smoothly.

Used for GM technicians at training.

Couple of the pages have writing on them.