{"nhtsa_id":606994,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-09-09","date":"1999-05-01","document_id":"6162","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:APPLIANCE:AIR CONDITIONER","mfr_system":null,"summary":"EXPERIENCING THUMP NOISE IN AIR CONDITIONER (A/C) AFTER START-UP. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/606994","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"SUPER DUTY F SERIES","year_from":1999,"year_to":1999,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}