{"nhtsa_id":10168709,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-12-04","date":"2019-11-21","document_id":"01-071","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Fix-As-Fail The evaporator core may crack in vehicles with the ISX-15 engine. An improved suction line has been released that removes stress transferred to the evaporator core.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10168709-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10168709-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10168709","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"T680","year_from":2011,"year_to":2018,"match":"exact","vehicle_ids":["2011_kenworth_t680","2012_kenworth_t680","2013_kenworth_t680","2014_kenworth_t680","2015_kenworth_t680","2016_kenworth_t680","2017_kenworth_t680","2018_kenworth_t680"]},{"make":"KENWORTH","model":"T880","year_from":2011,"year_to":2018,"match":"exact","vehicle_ids":["2011_kenworth_t880","2012_kenworth_t880","2013_kenworth_t880","2014_kenworth_t880","2015_kenworth_t880","2016_kenworth_t880","2017_kenworth_t880","2018_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":[]}