{"nhtsa_id":11023410,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2025-10-01","date":"2025-09-30","document_id":"N25-251670","mfr_campaign":"N25-251670","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"VICM: VICM (Vehicle Integration Control Module)","summary":"• Improvements to battery health diagnostics • Fixes for efficiency when using fast charging stations • Improvements to reliability for climate control and charging • Improvements to the accuracy of efficiency values • Improvements to shifting • Fixes to protect battery health and adjust charge limits • Improvements to diagnostics that impact propulsion, charging, and One-Pedal Driving During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11023410-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11023410-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11023410","components":[],"codes":[],"topics":[],"vehicles":[{"make":"GMC","model":"HUMMER EV PICKUP","year_from":2024,"year_to":2025,"match":"exact","vehicle_ids":["2024_gmc_hummer-ev-pickup","2025_gmc_hummer-ev-pickup"]},{"make":"GMC","model":"HUMMER EV SUV","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_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":[]}