{"nhtsa_id":10193442,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-05-17","date":"2021-04-09","document_id":"PIC6433A","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:MANAGEMENT SYSTEM/ENERGY CONTROL MODULE (BMS/BECM)","mfr_system":null,"summary":"This Preliminary information communicates that a service theft deterrent message may display with no DTC's. OnStar turned off the ECM read request to prevent re-occurrence.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10193442-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10193442-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10193442","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"hybrid-ev","name":"Hybrid and electric drive","parent":null},{"id":"engine-control-module","name":"Engine control module","parent":"engine"},{"id":"traction-battery","name":"High-voltage battery","parent":"hybrid-ev"}],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"CT4","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_cadillac_ct4"]},{"make":"CADILLAC","model":"CT5","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_cadillac_ct5"]}],"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":[]}