{"nhtsa_id":11034066,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2026-06-26","date":"2026-06-18","document_id":"661.20","mfr_campaign":"661.20","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"BCM, EBCM: BCM (Body Control Module), EBCM (Electronic Brake Control Module)","summary":"• Improves traction and stability control when accelerating or on uneven terrain. • Improves braking and stopping performance on low-traction surfaces. • Improves the performance of assisted braking features. • The active cabin ventilation feature will operate more reliably. • Additional protection for the health of your battery and updates to help prevent excessive battery drain and overheating. • Improvements will support successful software updates for your vehicle and allow you to access new features and fixes.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034066-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034066-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11034066","components":[],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"CT4","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_cadillac_ct4"]},{"make":"CADILLAC","model":"CT5","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_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":[]}