{"nhtsa_id":11027059,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-01-06","date":"2025-12-23","document_id":"15-034","mfr_campaign":"15-034","replaces":null,"component":"STEERING","mfr_system":null,"summary":"Certain Kenworth L770 and Peterbilt Model 520 chassis may encounter a slight increase in effort in the right-hand steering shaft when turning the wheel.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11027059-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11027059-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11027059","components":[{"id":"steering","name":"Steering","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"L770","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_kenworth_l770"]},{"make":"PETERBILT","model":"520","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_peterbilt_520","2025_peterbilt_520","2026_peterbilt_520"]}],"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":[]}