{"nhtsa_id":10178211,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-08-08","date":"2020-07-10","document_id":"SC-20-084","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT; ENGINE AND ENGINE COOLING:COOLING SYSTEM","mfr_system":null,"summary":"This retrofit removes an unnecessary bleed line in the coolant system that may lead to air entrapment and reduced efficiency of the cooling system.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10178211-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10178211-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10178211","components":[{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"cooling-system","name":"Cooling system","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"PROTERRA","model":"CATALYST","year_from":2017,"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":[]}