This comprehensive service and repair manual for the 1972 Chevrolet Van G10, G20, and G30 models provides detailed information covering all aspects of maintenance, service, diagnosis, and repair. It is the same manual used by dealerships to maintain, service, diagnose, and repair these vehicles. The manual includes complete step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications.

The manual offers a wealth of information, including sections on:

* **Maintenance:** Learn about routine maintenance procedures for your van, ensuring its optimal performance and longevity.
* **Engine:** Dive into the workings of the engine, covering everything from troubleshooting to rebuild procedures.
* **Control System:** Understanding the engine control system, including fuel management, emissions, and other critical components.
* **Mechanical:** Comprehensive information on all mechanical systems, including the transmission, drivetrain, suspension, and brakes.
* **Fuel Service Specifications:** Detailed specifications related to fuel systems and components.
* **Emission Control:** Information on emission control systems and their proper functioning.
* **Intake Exhaust Cooling:** Guidelines for servicing and maintaining your van's intake, exhaust, and cooling systems.
* **Lube:** Guidance on lubrication procedures for all components, ensuring proper lubrication and preventing wear.
* **Ignition Starting Charging:** Step-by-step instructions for diagnosing and repairing ignition, starting, and charging systems.
* **Auto Transmission Clutch:** Information on automatic transmission operation, troubleshooting, and repair.
* **Manual Transmission:** Comprehensive guidelines for servicing and repairing manual transmissions.
* **Transfer Propeller Shaft:** Instructions for inspecting, maintaining, and repairing transfer cases and propeller shafts.
* **Drive Shaft:** Guidance on the inspection, repair, and replacement of drive shafts.
* **Differential:** Detailed information on differential operation, diagnosis, and repair.
* **Axle Suspension:** Learn about the axle and suspension system, including maintenance, repair, and alignment.
* **Tire & Wheel:** Information on tire and wheel specifications, maintenance, and repair.
* **Brake Control:** Guidance on brake system diagnosis, repair, and adjustment.
* **Brake:** Detailed information on brake system components, including their operation and maintenance.
* **Parking Brake:** Instructions for inspecting, adjusting, and repairing the parking brake system.
* **Steering Column:** Comprehensive information on steering columns, including maintenance and repair.
* **Power Steering:** Guidelines for diagnosing and repairing power steering systems.
* **Air Condition:** Learn about the air conditioning system, including its operation, maintenance, and troubleshooting.
* **Suppl Restraint System:** Information on supplemental restraint systems, such as airbags and seat belts.
* **Seat Belt:** Detailed instructions for inspecting, adjusting, and repairing seat belts.
* **Engine Immobilizer:** Information on engine immobilizer systems, including diagnosis and repair.
* **Cruise Control:** Guidance on understanding, troubleshooting, and repairing cruise control systems.
* **Wiper & Washer:** Information on windshield wiper and washer systems, including their operation and repair.
* **Door Lock:** Troubleshooting and repair information for door locks and related mechanisms.
* **Meter Audio/Visual:** Instructions for diagnosing and repairing instrument clusters, gauges, and other visual displays.
* **Horn:** Information on horn systems, including their operation and repair.
* **Windshield/Glass Mirror:** Guidance on windshield and mirror replacement and repair procedures.
* **Instrument Panel:** Information on the instrument panel, including its components and repair.
* **Seat:** Learn about seat adjustments, repairs, and replacement.
* **Engine Hood/ Door:** Instructions for inspecting, adjusting, and repairing engine hood and doors.
* **Exterior & Interior:** Information on exterior and interior components, including their maintenance and repair.
* **Electrical:** Detailed information on electrical systems, including wiring diagrams and troubleshooting.
* **Multiplex/ Can Communication:** Information on multiplex and CAN communication systems, their operation, and troubleshooting.

This manual is a valuable resource for anyone who wants to learn how to maintain, service, or repair their 1972 Chevrolet Van G10, G20, or G30.

The 1972 Chevrolet Van G10, G20, and G30 were iconic workhorses of the era, offering versatility and ruggedness for a wide range of applications. These full-size vans, built on General Motors' C/K platform, provided spacious cargo areas and passenger capacity, making them popular choices for businesses, families, and even recreational use. The G10, G20, and G30 were differentiated by their gross vehicle weight ratings (GVWR), with the G10 being the lightest and the G30 the heaviest. All three models were powered by a range of Chevrolet's reliable inline-six and V8 engines, including the 250 cubic inch six-cylinder, the 350 cubic inch V8, and the powerful 400 cubic inch V8. The vans came equipped with a variety of transmissions, including three-speed and four-speed manual gearboxes and a two-speed automatic.

These vans were known for their durability and simplicity, making them popular among mechanics and owners alike. While not as refined as modern vehicles, their sturdy construction made them capable of handling heavy loads and enduring challenging conditions. The 1972 Chevrolet G10, G20, and G30 vans were a testament to American ingenuity and work ethic, providing reliable transportation for countless individuals and businesses. They exemplified the era's focus on practicality and utility, offering a blank canvas for customization and adaptation. The vans' enduring legacy is a testament to their versatility, sturdiness, and the lasting impact they had on the automotive landscape.