This comprehensive 1978 Chevrolet Van G10, G20, G30 Service and Repair Manual provides detailed instructions, diagrams, and specifications for maintaining, servicing, diagnosing, and repairing your vehicle. It covers all models and all repairs from A to Z, ensuring you have the exact same information used by technicians at dealerships.

The manual features step-by-step instructions, detailed diagrams and illustrations, wiring schematics, and specifications to help you confidently repair your vehicle with ease. You'll find information on a wide range of topics, including:

* **Maintenance:** Routine maintenance procedures, schedules, and tips to keep your van running smoothly.
* **Engine:** Detailed information on engine components, operation, troubleshooting, and repair procedures.
* **Control System:** Comprehensive coverage of engine control systems, including fuel injection, emission control, and diagnostics.
* **Mechanical:** In-depth explanations and repair procedures for mechanical systems like the transmission, drivetrain, suspension, brakes, and steering.
* **Electrical:** Detailed diagrams and information on electrical systems, including wiring, components, and troubleshooting procedures.
* **Body:** Instructions for repairing and maintaining body components, such as doors, windows, and interior trim.

With this manual, you can save time and money by performing many repairs yourself, gaining a deeper understanding of your vehicle, and making informed decisions about its care and maintenance.

The 1978 Chevrolet Van G10, G20, and G30 were popular workhorses in the late 1970s, known for their rugged construction, ample cargo space, and versatility. These full-size vans, part of General Motors' C/K series, offered an array of options for both commercial and personal use. The G10, the smallest of the trio, had a 125-inch wheelbase and was a popular choice for smaller businesses. The G20, with a 134-inch wheelbase, offered more cargo space and was often used for larger deliveries or as a passenger van. The G30, boasting a 158-inch wheelbase, was the largest option and was commonly utilized as an RV or for heavy-duty hauling.

Powering these vans were a variety of engines, including the 250 cubic inch six-cylinder, the 350 cubic inch V8, and the 400 cubic inch V8. Transmission options included a three-speed automatic, a four-speed manual, and a four-speed automatic. The standard features on the 1978 Chevrolet vans included a vinyl interior, vinyl flooring, and a simple dashboard with basic gauges. Options included power steering, air conditioning, and a variety of seating configurations. While not as flashy or luxurious as their modern counterparts, the 1978 G10, G20, and G30 were reliable workhorses that could handle a variety of tasks. Their straightforward design and rugged construction made them highly popular among businesses and families alike.