{"nhtsa_id":11026022,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-12-03","date":"2025-06-02","document_id":"07-08-42-006U","mfr_campaign":null,"replaces":null,"component":"EXTERIOR LIGHTING","mfr_system":null,"summary":"This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box removed.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026022-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026022-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11026022","components":[{"id":"lighting","name":"Lighting","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2007,"year_to":2025,"match":"base","vehicle_ids":["2007_chevrolet_silverado","2008_chevrolet_silverado","2009_chevrolet_silverado","2010_chevrolet_silverado","2011_chevrolet_silverado","2012_chevrolet_silverado","2013_chevrolet_silverado","2014_chevrolet_silverado","2015_chevrolet_silverado","2016_chevrolet_silverado","2017_chevrolet_silverado","2018_chevrolet_silverado","2019_chevrolet_silverado","2020_chevrolet_silverado","2021_chevrolet_silverado","2022_chevrolet_silverado","2023_chevrolet_silverado","2024_chevrolet_silverado","2025_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2019,"year_to":2025,"match":"base","vehicle_ids":["2019_chevrolet_silverado","2020_chevrolet_silverado","2021_chevrolet_silverado","2022_chevrolet_silverado","2023_chevrolet_silverado","2024_chevrolet_silverado","2025_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2019,"year_to":2025,"match":"base","vehicle_ids":["2019_chevrolet_silverado","2020_chevrolet_silverado","2021_chevrolet_silverado","2022_chevrolet_silverado","2023_chevrolet_silverado","2024_chevrolet_silverado","2025_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 1500","year_from":2007,"year_to":2025,"match":"base","vehicle_ids":["2007_gmc_sierra","2008_gmc_sierra","2009_gmc_sierra","2010_gmc_sierra","2011_gmc_sierra","2012_gmc_sierra","2013_gmc_sierra","2014_gmc_sierra","2015_gmc_sierra","2016_gmc_sierra","2017_gmc_sierra","2018_gmc_sierra","2019_gmc_sierra","2020_gmc_sierra","2021_gmc_sierra","2022_gmc_sierra","2023_gmc_sierra","2024_gmc_sierra","2025_gmc_sierra"]},{"make":"GMC","model":"SIERRA 2500","year_from":2019,"year_to":2025,"match":"base","vehicle_ids":["2019_gmc_sierra","2020_gmc_sierra","2021_gmc_sierra","2022_gmc_sierra","2023_gmc_sierra","2024_gmc_sierra","2025_gmc_sierra"]},{"make":"GMC","model":"SIERRA 3500","year_from":2019,"year_to":2025,"match":"base","vehicle_ids":["2019_gmc_sierra","2020_gmc_sierra","2021_gmc_sierra","2022_gmc_sierra","2023_gmc_sierra","2024_gmc_sierra","2025_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":[]}