G 2500 3/4 Ton Van L6-250 4.1L VIN D 2-bbl (1982)
EFE Valve: Service and Repair
Manifold Heat Valve
1. Remove exhaust pipe to manifold nuts and lower exhaust pipe.
2. Remove heat valve from exhaust pipe.
3. Reverse procedure to install.
GMC Workshop Service and Repair Manuals
Thermal Vacuum Valve, EFE >
< Actuator Assembly|Page 1482
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