HVAC Recirculation Door Actuator. 1995 GMC K1500 Suburban Engine: 5.7L V8; Air Inlet Recirculating; Blower Housing;. 1995 GMC K1500 Suburban Engine: 6.5L V8; Air Inlet Recirculating; Blower Housing;. 1996 GMC K1500 Suburban Engine: 5.7L V8; Air Inlet Recirculating; Blower Housing;.