{"nhtsa_id":10194131,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-05-24","date":"2021-04-27","document_id":"N202307080","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Service Update Bulletin. Certain vehicles may have a condition where the engine control module (ECM) software allows the Auto Stop to occur at a state of charge below 65%. Auto Stop is supposed to be inhibited at 65% to protect against excessive battery wear and discharge. Dealers are to reprogram the ECM.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10194131-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10194131-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10194131","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"CT4","year_from":2020,"year_to":2021,"match":"exact","vehicle_ids":["2020_cadillac_ct4","2021_cadillac_ct4"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]},{"make":"CHEVROLET","model":"TAHOE","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]},{"make":"GMC","model":"K SERIES","year_from":null,"year_to":null,"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":[]}