HVAC Heater Control Valve 4 Seasons For 1970-1972 Chevrolet C10 Pickup

1970 Chevrolet C10 Pickup w/ A/C;. 1971 Chevrolet C10 Pickup Engine: 5.0L V8; w/ A/C;. 1971 Chevrolet C10 Pickup Engine: 5.7L V8; w/ A/C;. 1972 Chevrolet C10 Pickup Engine: 5.0L V8; w/ A/C;. 1971 Chevrolet C10 Pickup Engine: 6.6L V8; w/ A/C;.