{"nhtsa_id":601556,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-08-07","date":"1998-04-01","document_id":"988362","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:APPLIANCE:AIR CONDITIONER","mfr_system":null,"summary":"SUBJECT REGARDING CHANGE IN REFRIGERANT CAPACITIES FOR VEHICLES BUILT FROM APRIL 3, 1998. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/601556","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"CENTURY","year_from":null,"year_to":null,"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":[]}