Door Lock Actuator. 1999-2002 Chevrolet Silverado 1500. 1999-2002 Chevrolet Silverado 2500. 1x HVAC AC Heater Blend Door Actuator (604-113). Position specific - vehicles often have multiple different HVAC door actuators; review this part's application notes to verify it matches the location and function of the actuator you need to replace.
