{"nhtsa_id":10112579,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2012-11-15","document_id":"PIC4468C","mfr_campaign":null,"replaces":null,"component":"VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW","mfr_system":null,"summary":"This Preliminary Information communication provides information to the technician about vehicles that the rear defogger stays on for longer than 20 minutes. Dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10112579-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10112579-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10112579","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":"IMPALA","year_from":2006,"year_to":2013,"match":"exact","vehicle_ids":["2006_chevrolet_impala","2007_chevrolet_impala","2008_chevrolet_impala","2009_chevrolet_impala","2010_chevrolet_impala","2011_chevrolet_impala","2012_chevrolet_impala","2013_chevrolet_impala"]},{"make":"CHEVROLET","model":"MONTE CARLO","year_from":2006,"year_to":2007,"match":"exact","vehicle_ids":["2006_chevrolet_monte-carlo","2007_chevrolet_monte-carlo"]}],"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":[]}