Chevrolet Impala, Full-Size Cars 1968-1978 Vacuum Diagrams Repair Guide
Access our free Vacuum Diagrams Repair Guide for Chevrolet Full-size Cars 1968-1978 through AutoZone Rewards. These diagrams include:
- Fig. 1 Vacuum hose diagram-1971 V8
- Fig. 2 Vapor control hoses for 1971 L6 engines
- Fig. 3 Vapor control hoses for 1971 V8 engines
- Fig. 4 Vapor control hoses for 1972 V8 engines-C60 is for A/C equipped engines, LS3 is the 402 cu. in. engine, LS5 is the 454 cu. in. engine
- Fig. 5 Vapor control hoses for 1973 L6 engines
- Fig. 6 Vacuum schematic of the EFE system on 1976 L6 engines

Access our Chevrolet Full-size Cars 1968-1978 Vacuum Diagrams Repair Guide by creating an account or signing into your AutoZone Rewards account. Once you sign in, follow these instructions to access our Repair Guides.
- Add your vehicle in Manage My Vehicles.
- Enter your vehicle details.
- Click the “View More” button, and then click “Vehicle Repair Guides.”
- Select the chapter “Vacuum Diagrams Repair Guide”.