{"nhtsa_id":10186057,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-02-01","date":"2020-12-22","document_id":"N202317060","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE","mfr_system":null,"summary":"Emissions Recall - General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles. The vehicle?s Engine Control Module (ECM) may have been reprogrammed during service with incorrect diagnostic software. If that occurred, the ECM may not accurately diagnose a fault in the auxiliary fuel tank system or the four wheel drive system. Further, the ECM may incorrectly report a fault or illuminate the malfunction indicator lamp (check engine light) on vehicles not equipped with these two systems. Dealers are to reprogram the ECM.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10186057-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10186057-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10186057","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"engine-control-module","name":"Engine control module","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2019,"year_to":2019,"match":"base","vehicle_ids":["2019_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 1500","year_from":2019,"year_to":2019,"match":"base","vehicle_ids":["2019_gmc_sierra"]}],"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":[]}