{"nhtsa_id":11030459,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2026-04-01","date":"2026-02-23","document_id":"661.20","mfr_campaign":"661.20","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"TCP (Telematics Connectivity Platform): TCP (Telematics Connectivity Platform)","summary":"• Improvements to the performance of vehicle software updates. • Fixes to help prevent loss of functionality for connectivity features, including maps and Wi-Fi. • Fixes to help prevent erroneous emergency calls from vehicle. • Fixes to help ensure proper functionality for mobile app features. • Improvements to the performance of Super Cruise.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11030459-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11030459-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11030459","components":[],"codes":[],"topics":[],"vehicles":[{"make":"GMC","model":"HUMMER EV PICKUP","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_gmc_hummer-ev-pickup"]},{"make":"GMC","model":"HUMMER EV SUV","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_gmc_hummer-ev-suv"]}],"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":[]}