{"nhtsa_id":52585,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1997-08-21","date":"1997-03-01","document_id":"631106","mfr_campaign":null,"replaces":null,"component":"VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM","mfr_system":null,"summary":"AIR LEAKING FROM I/P VENTS IN HEATER OR DEFROST MODES (REPLACE MODE VALVE VACUUM ACTUATOR; ADD CLIP TO HVAC MODULE CASE). *AK","document":null,"url":"https://open.wenmarpro.com/bulletins/52585","components":[{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"CAVALIER","year_from":1996,"year_to":1996,"match":"exact","vehicle_ids":["1996_chevrolet_cavalier"]},{"make":"PONTIAC","model":"SUNFIRE","year_from":1996,"year_to":1996,"match":"exact","vehicle_ids":["1996_pontiac_sunfire"]}],"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":[]}