{"nhtsa_id":11032296,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-05-06","date":"2026-04-30","document_id":"42-064","mfr_campaign":"42-064","replaces":null,"component":"ENGINE","mfr_system":null,"summary":"Fix-as-Fail On certain Kenworth T680 chassis equipped with PACCAR MX-13 engines, wiring to the Horton LCX230 crank-mounted fan drive may experience a short due to chafing or water ingress, affecting fan drive operation.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11032296-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11032296-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11032296","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"T680","year_from":2020,"year_to":2023,"match":"exact","vehicle_ids":["2020_kenworth_t680","2021_kenworth_t680","2022_kenworth_t680","2023_kenworth_t680"]},{"make":"PETERBILT","model":"579","year_from":2020,"year_to":2023,"match":"exact","vehicle_ids":["2020_peterbilt_579","2021_peterbilt_579","2022_peterbilt_579","2023_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":[]}