{"nhtsa_id":612431,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-06-08","date":"2000-01-01","document_id":"7958","mfr_campaign":null,"replaces":"7958","component":"EQUIPMENT:APPLIANCE:AIR CONDITIONER","mfr_system":null,"summary":"THE VEHICLE EXHIBIT SHIF ON THE FLY ENGAGEMENT/DISENGAGEMENT ISSUES OR HEATER/AC ONLY BLOWING OUT OF THE DEFROST MODE. THESE CONDITIONS MAY BE CAUSED BY THE VACUUM PUMP.","document":null,"url":"https://open.wenmarpro.com/bulletins/612431","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"EXCURSION","year_from":2000,"year_to":2000,"match":"exact","vehicle_ids":["2000_ford_excursion"]},{"make":"FORD","model":"F SERIES (HEAVY)","year_from":2000,"year_to":2000,"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":[]}