{"nhtsa_id":11033387,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-06-04","date":"2026-05-29","document_id":"R2601","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Updated primary and/or secondary chassis modules for certain pre-production Kenworth chassis are now available for installation.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11033387-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11033387-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11033387","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"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":"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":"567","year_from":2022,"year_to":2026,"match":"exact","vehicle_ids":["2022_peterbilt_567","2023_peterbilt_567","2024_peterbilt_567","2025_peterbilt_567","2026_peterbilt_567"]},{"make":"PETERBILT","model":"579","year_from":2022,"year_to":2026,"match":"exact","vehicle_ids":["2022_peterbilt_579","2023_peterbilt_579","2024_peterbilt_579","2025_peterbilt_579","2026_peterbilt_579"]}],"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":[]}