HVAC Blend Door Actuator. 2005 Chevrolet Silverado 2500 Engine: 5.3L V8; Blend Door Actuator; Upper;. 2006 Chevrolet Silverado 2500 Engine: 4.8L V8; Blend Door Actuator; Lower or Upper; Main;. 2006 Chevrolet Silverado 2500 Engine: 5.3L V8; Blend Door Actuator; Lower or Upper; Main;.
