{"nhtsa_id":11019172,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-06-05","date":"2025-05-31","document_id":"98-030","mfr_campaign":"98-030","replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"5/29/2025: A new Ethernet Multiplexed Architecture (EMUX) Service Tool Kit service manual (SM034-022) has been released to provide general use information. The new EMUX Service Tool Kit improves cab & chassis electrical troubleshooting efficiency, while reducing risk of component damage. 4/29/2025: The Ethernet Multiplexed Architecture (EMUX) Service Tool Kit and individual kit components are now available to order. Dealers that have received their first kit may order an additional kit. The EMUX Service Tool Kit Part number has been updated to match OEM drawings (P74-1045-001). Individual kit component part numbers can be found in the Reference Bill of Materials sheet. The new EMUX Service Tool Kit improves cab & chassis electrical troubleshooting efficiency, while reducing risk of component damage. Information Only New diagnostic tool is required to support PACCAR Ethernet Multiplexed Architecture (EMUX). The EMUX Service Tool Kit will help improve cab & chassis electrical troubleshooting efficiency, while reducing the risk of component damage.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11019172-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11019172-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11019172","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PETERBILT","model":"220","year_from":2020,"year_to":2025,"match":"exact","vehicle_ids":["2020_peterbilt_220","2021_peterbilt_220","2022_peterbilt_220","2023_peterbilt_220","2024_peterbilt_220","2025_peterbilt_220"]},{"make":"PETERBILT","model":"520","year_from":2020,"year_to":2025,"match":"exact","vehicle_ids":["2020_peterbilt_520","2021_peterbilt_520","2022_peterbilt_520","2023_peterbilt_520","2024_peterbilt_520","2025_peterbilt_520"]},{"make":"PETERBILT","model":"579","year_from":2020,"year_to":2025,"match":"exact","vehicle_ids":["2020_peterbilt_579","2021_peterbilt_579","2022_peterbilt_579","2023_peterbilt_579","2024_peterbilt_579","2025_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":[]}