{"nhtsa_id":617727,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-03-24","date":"2000-12-01","document_id":"000139001A","mfr_campaign":null,"replaces":"000139001","component":"VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM","mfr_system":null,"summary":"SOME CUSTOMERS MAY COMMENT THAT ONE OR MORE OF THE INSTRUMENT PANEL AIR OUTLET VENT SHUT-OFF DOORS MAY CLOSE WHEN THE BLOWER FAN IS ON HIGH. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/617727","components":[{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"DEVILLE","year_from":2000,"year_to":2000,"match":"exact","vehicle_ids":["2000_cadillac_deville"]}],"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":[]}