{"nhtsa_id":11027881,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-01-30","date":"2026-01-22","document_id":"PIT6474","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"This PI addresses an issue where the customer may experience a loss of brake assist, accompanied by numerous MILs and warnings, after the engine has restarted following a stop/start event, caused by a drop in battery voltage tot he Brake System Control module. Dealers are to test the vehicle battery and update the Brake System control module with updated software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11027881-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11027881-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11027881","components":[],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2022,"year_to":2024,"match":"base","vehicle_ids":["2022_chevrolet_silverado","2023_chevrolet_silverado","2024_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 1500","year_from":2022,"year_to":2024,"match":"base","vehicle_ids":["2022_gmc_sierra","2023_gmc_sierra","2024_gmc_sierra"]}],"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":[]}