{"nhtsa_id":10171431,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-02-18","date":"2020-01-28","document_id":"N192278640","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Service Update Bulletin - Certain 2020 model year Chevrolet Silverado and GMC Sierra vehicles equipped with a 2.7L Engine (RPO ENL), Engine Control Disable Start/Stop (RPO L3B), and a 3.5? Driver?s Information Center Display (RPO UDC), may have a condition where the start/stop disabling function does not work. Dealers will reprogram the engine control module (ECM) with an updated calibration.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10171431-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10171431-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10171431","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2020,"year_to":2020,"match":"base","vehicle_ids":["2020_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 2500","year_from":2020,"year_to":2020,"match":"base","vehicle_ids":["2020_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":[]}