{"nhtsa_id":10248328,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-01-05","date":"2023-12-22","document_id":"23PBJ","mfr_campaign":null,"replaces":null,"component":"SERVICE BRAKES, AIR","mfr_system":null,"summary":"Certain 536, 537, 548, and 567 chassis built with 2.1m Medium Duty End of Frame Trailer Connections and Tractor Protection Valves may not meet the standard trailer brake release timing requirements by 0.5 seconds. A delay in the trailer brake release may create momentary instability to the trailer and increase the risk of a crash.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248328-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248328-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10248328","components":[{"id":"brakes","name":"Brakes","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PETERBILT","model":"536","year_from":2020,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"PETERBILT","model":"536","year_from":2022,"year_to":2024,"match":"exact","vehicle_ids":["2022_peterbilt_536","2023_peterbilt_536","2024_peterbilt_536"]},{"make":"PETERBILT","model":"537","year_from":2020,"year_to":2022,"match":null,"vehicle_ids":[]},{"make":"PETERBILT","model":"537","year_from":2023,"year_to":2024,"match":"exact","vehicle_ids":["2023_peterbilt_537","2024_peterbilt_537"]},{"make":"PETERBILT","model":"548","year_from":2020,"year_to":2023,"match":null,"vehicle_ids":[]},{"make":"PETERBILT","model":"548","year_from":2024,"year_to":2024,"match":"exact","vehicle_ids":["2024_peterbilt_548"]}],"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":[]}