{"nhtsa_id":11035391,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2026-07-31","date":"2026-07-16","document_id":"662.20","mfr_campaign":"662.20","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"CGM, TPIM: CGM-GTW (Communication Gateway Module), TPIM (Traction Power Inverter Module)","summary":"• Improved vehicle performance when driving in Reverse on slippery surfaces • Better One-Pedal Driving performance • Additional protection for battery health and prevention for battery drain • Improved accuracy for driver display messages • This update contains a required software change to help improve the overall software update and diagnostics process.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11035391-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11035391-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11035391","components":[],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"BOLT EV","year_from":2027,"year_to":2027,"match":"base","vehicle_ids":["2027_chevrolet_bolt"]}],"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":[]}