{"nhtsa_id":11036504,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2026-08-31","date":"2026-07-08","document_id":"662.20","mfr_campaign":"662.20","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"RDCM, CGM, EBCM, TPIM, HDLM, PTM, VLM: RDCM (Rear Driver Control Module), CGM-GTW (Communication Gateway Module), EBCM (Electronic Brake Control Module), TPIM (Traction Power Inverter Module), HDLM (High Definition Localization Module), PTM (Power Tailgate Module), VLM (Vehicle Leveling Module)","summary":"• Improvements to active cabin ventilation • Additional protection for the health of your battery • Updates to help prevent excessive battery drain and overheating • Improvements to the software update system","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036504-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036504-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11036504","components":[],"codes":[],"topics":[],"vehicles":[{"make":"GMC","model":"HUMMER EV PICKUP","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["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":[]}