{"nhtsa_id":11027067,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-01-06","date":"2025-12-23","document_id":"25PACF","mfr_campaign":"25PACF","replaces":null,"component":"EXTERIOR LIGHTING","mfr_system":null,"summary":"Parts and procedures are now available for all affected chassis equipped with Vehicle Electronic Control Unit (VECU) part number Q21-1157-013-011 / Q21-1157-013-013 / Q21-1157-002-002 / Q21-1157-004-004 / Q21-1157-006-006 / Q21-1157-009-009. See attached Parts Matrix for required parts per chassis.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11027067-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11027067-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11027067","components":[{"id":"lighting","name":"Lighting","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"L770","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_kenworth_l770","2025_kenworth_l770","2026_kenworth_l770"]},{"make":"KENWORTH","model":"T180","year_from":2023,"year_to":2025,"match":"exact","vehicle_ids":["2023_kenworth_t180","2024_kenworth_t180","2025_kenworth_t180"]},{"make":"KENWORTH","model":"T280","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_kenworth_t280","2024_kenworth_t280","2025_kenworth_t280","2026_kenworth_t280"]},{"make":"KENWORTH","model":"T380","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_kenworth_t380","2024_kenworth_t380","2025_kenworth_t380","2026_kenworth_t380"]},{"make":"KENWORTH","model":"T480","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_kenworth_t480","2024_kenworth_t480","2025_kenworth_t480","2026_kenworth_t480"]},{"make":"KENWORTH","model":"T680","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_kenworth_t680","2024_kenworth_t680","2025_kenworth_t680","2026_kenworth_t680"]},{"make":"KENWORTH","model":"T880","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_kenworth_t880","2024_kenworth_t880","2025_kenworth_t880","2026_kenworth_t880"]},{"make":"KENWORTH","model":"W990","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_kenworth_w990","2024_kenworth_w990","2025_kenworth_w990","2026_kenworth_w990"]},{"make":"PETERBILT","model":"520","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_peterbilt_520","2024_peterbilt_520","2025_peterbilt_520","2026_peterbilt_520"]},{"make":"PETERBILT","model":"535","year_from":2023,"year_to":2025,"match":"exact","vehicle_ids":["2023_peterbilt_535","2024_peterbilt_535","2025_peterbilt_535"]},{"make":"PETERBILT","model":"536","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_peterbilt_536","2024_peterbilt_536","2025_peterbilt_536","2026_peterbilt_536"]},{"make":"PETERBILT","model":"537","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_peterbilt_537","2024_peterbilt_537","2025_peterbilt_537","2026_peterbilt_537"]},{"make":"PETERBILT","model":"548","year_from":2023,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"PETERBILT","model":"548","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_peterbilt_548","2025_peterbilt_548","2026_peterbilt_548"]},{"make":"PETERBILT","model":"567","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_peterbilt_567","2024_peterbilt_567","2025_peterbilt_567","2026_peterbilt_567"]},{"make":"PETERBILT","model":"579","year_from":2023,"year_to":2026,"match":"exact","vehicle_ids":["2023_peterbilt_579","2024_peterbilt_579","2025_peterbilt_579","2026_peterbilt_579"]},{"make":"PETERBILT","model":"589","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_peterbilt_589","2025_peterbilt_589","2026_peterbilt_589"]}],"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":[]}