{"nhtsa_id":11013234,"type":"service_campaign","type_name":"Service campaign","date_added":"2025-01-29","date":"2025-01-29","document_id":"N242438530","mfr_campaign":"N242438530","replaces":null,"component":"ENGINE","mfr_system":null,"summary":"Service Update. The Engine Control Module (ECM) in certain vehicles may not properly clear the DTC U1962 (Unable to Authenticate Serial Data Message). If a communications fault were to occur, the DTC will remain set with the Malfunction Indicator Light (Check Engine Light) illuminated even if the condition resolves. Clearing the DTC with a service tool will not clear the permanent status of the DTC which could result in an emissions Inspection/Maintenance (I/M) test failure. Dealers are to reprogram the ECM.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11013234-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11013234-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11013234","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["U1962"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"CORVETTE","year_from":2024,"year_to":2024,"match":"exact","vehicle_ids":["2024_chevrolet_corvette"]}],"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":[]}