{"nhtsa_id":10174812,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-05-11","date":"2020-04-07","document_id":"N202299641","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL","mfr_system":null,"summary":"Emission Recall - Exceeds NOx Standard In Emissions Testing - General Motors has decided to conduct a voluntary emissions recall involving certain 2019-2020 Chevrolet Silverado 4500HD/5500HD/6500HD vehicles equipped with a 6.6L diesel engine. These vehicles may be equipped with an improperly functioning on-board emission-related diagnostic system that violates California and Federal standards and regulations. Dealers are to reprogram the Engine Control Module (ECM) with corrected software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10174812-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10174812-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10174812","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"6500","year_from":2019,"year_to":2019,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"SILVERADO 4500","year_from":2019,"year_to":2020,"match":"base","vehicle_ids":["2019_chevrolet_silverado","2020_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 5500","year_from":2020,"year_to":2020,"match":"base","vehicle_ids":["2020_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 6500","year_from":2019,"year_to":2019,"match":"base","vehicle_ids":["2019_chevrolet_silverado"]},{"make":"CHEVROLET","model":"duplicate SILVERADO 5500","year_from":2019,"year_to":2019,"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":[]}