{"nhtsa_id":11033914,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-06-17","date":"2026-06-02","document_id":"R2103","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; ENGINE","mfr_system":null,"summary":"Updated the point of contact for sourcing the MX Engine Overlay Harness Kits. This retrofit should have been completed by 5/15/2022 per the Action section of the bulletin. However, trucks still open in SIR are still eligible for the repairs.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11033914-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11033914-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11033914","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PETERBILT","model":"365","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_peterbilt_365"]},{"make":"PETERBILT","model":"367","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_peterbilt_367"]},{"make":"PETERBILT","model":"389","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_peterbilt_389"]},{"make":"PETERBILT","model":"520","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_peterbilt_520"]},{"make":"PETERBILT","model":"567","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_peterbilt_567"]},{"make":"PETERBILT","model":"579","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_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":[]}