{"nhtsa_id":11031831,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2026-05-01","date":"2026-04-10","document_id":"661.21","mfr_campaign":"661.21","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"ACP2, LRR: ACP2 (ADAS Compute Platform 2), LRR (Long Range Radar)","summary":"• Improvements to the availability of driver assistance features. • Improvements to the performance of Automatic Emergency Braking and Adaptive Cruise Control braking. • Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031831-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031831-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11031831","components":[],"codes":[],"topics":[],"vehicles":[{"make":"BUICK","model":"ENVISION","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_buick_envision"]}],"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":[]}