{"nhtsa_id":10112684,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2012-12-17","document_id":"PIP4599D","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This Preliminary Information communication provides information to the technician about vehicles that may have Diagnostic Trouble Code P2181 set. Technician will need to use a Technician 2 and test the engine coolant thermostat heater. If the coolant temperature does not reach 195 Fahrenheit (90 Celsius) within 5 minutes, replace the thermostat. Technician should also check to ensure the calibrations are up to date.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10112684-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10112684-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10112684","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P2181"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"AVEO","year_from":2009,"year_to":2009,"match":"exact","vehicle_ids":["2009_chevrolet_aveo"]},{"make":"PONTIAC","model":"G3","year_from":2009,"year_to":2009,"match":"exact","vehicle_ids":["2009_pontiac_g3"]},{"make":"PONTIAC","model":"WAVE","year_from":2009,"year_to":2009,"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":[]}