{"nhtsa_id":10233383,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-04-04","date":"2023-03-24","document_id":"R2301","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"The emissions exemption expired on 12/31/2021 for certain pre-production vehicles equipped with PACCAR Model Year 2022 MX engines. Production-level engine, VECU, and Digital Display software is now available to make these vehicles compliant. New Engine Emissions and Clean Idle labels will be installed.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10233383-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10233383-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10233383","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"T680","year_from":2022,"year_to":2023,"match":"exact","vehicle_ids":["2022_kenworth_t680","2023_kenworth_t680"]},{"make":"KENWORTH","model":"T880","year_from":2022,"year_to":2023,"match":"exact","vehicle_ids":["2022_kenworth_t880","2023_kenworth_t880"]}],"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":[]}