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1975 General Motors Emission Control Systems Maintenance Manual
1975 General Motors Emission Control Systems Maintenance Manual Author:Service Section, General Motors Corp. Systems maintenance manual for: Passenger Cars and Light Duty Trucks with Light Duty Emission Systems. — Federal and state laws regulate the amounts of carbon monoxide (CO), hydrocarbons (HC), and oxides of nitrogen (NOx) emitted from motor vehicles. To comply with these strict regulations, General Motors installed special emission control system... more »s on 1975 vehicles.
The purpose of this book is to describe the emission control systems on 1975 passenger cars (and light duty trucks with light duty emission system) and to give diagnostic and maintenance information. Section I explains the purpose of the devices or systems and describes their operation. Section II provides the procedures to follow when performing the emissions maintenance portion of the 1975 Maintenance Schedule. It also contains diagnostic and service information to use in repairing systems.« less