{"nhtsa_id":10167369,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-11-08","date":"2019-10-07","document_id":"SB 3121","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This Service Bulletin informs owners of model year 2018-2020 J3500 and J4500 model coaches of the procedure to insulate the gap in the area between the front cap and under the dash panel on the driver's side, that will help shield the ambient temperature sense or from the air circulating inside the coach.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10167369-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10167369-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10167369","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MCI","model":"J4500","year_from":2019,"year_to":2019,"match":null,"vehicle_ids":[]}],"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":[]}