{"nhtsa_id":10170603,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-01-22","date":"2020-01-21","document_id":"20TS-01","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY","mfr_system":null,"summary":"Technical Service Letter for DDC Series 60 engines concerning Series 60 Cylinder Head Resurfacing/Finish. Detroit Diesel does not recommend third party resurfacing of Series 60 cylinder heads (outside of Detroit and Detroit Reman).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10170603-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10170603-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10170603","components":[{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"CASCADIA","year_from":2007,"year_to":2011,"match":"exact","vehicle_ids":["2007_freightliner_cascadia","2008_freightliner_cascadia","2009_freightliner_cascadia","2010_freightliner_cascadia","2011_freightliner_cascadia"]},{"make":"FREIGHTLINER","model":"CENTURY CLASS","year_from":2002,"year_to":2011,"match":null,"vehicle_ids":[]},{"make":"FREIGHTLINER","model":"COLUMBIA","year_from":1999,"year_to":2000,"match":null,"vehicle_ids":[]},{"make":"FREIGHTLINER","model":"COLUMBIA","year_from":2002,"year_to":2011,"match":"exact","vehicle_ids":["2002_freightliner_columbia","2003_freightliner_columbia","2004_freightliner_columbia","2005_freightliner_columbia","2006_freightliner_columbia","2007_freightliner_columbia","2008_freightliner_columbia","2009_freightliner_columbia","2010_freightliner_columbia","2011_freightliner_columbia"]},{"make":"FREIGHTLINER","model":"CORONADO","year_from":2002,"year_to":2011,"match":"exact","vehicle_ids":["2002_freightliner_coronado","2003_freightliner_coronado","2004_freightliner_coronado","2005_freightliner_coronado","2006_freightliner_coronado","2007_freightliner_coronado","2008_freightliner_coronado","2009_freightliner_coronado","2010_freightliner_coronado","2011_freightliner_coronado"]},{"make":"WESTERN STAR","model":"4700","year_from":2002,"year_to":2011,"match":"exact","vehicle_ids":["2002_western-star_4700","2003_western-star_4700","2004_western-star_4700","2005_western-star_4700","2006_western-star_4700","2007_western-star_4700","2008_western-star_4700","2009_western-star_4700","2010_western-star_4700","2011_western-star_4700"]},{"make":"WESTERN STAR","model":"4800","year_from":2004,"year_to":2011,"match":"exact","vehicle_ids":["2004_western-star_4800","2005_western-star_4800","2006_western-star_4800","2007_western-star_4800","2008_western-star_4800","2009_western-star_4800","2010_western-star_4800","2011_western-star_4800"]},{"make":"WESTERN STAR","model":"4900","year_from":2002,"year_to":2011,"match":"exact","vehicle_ids":["2002_western-star_4900","2003_western-star_4900","2004_western-star_4900","2005_western-star_4900","2006_western-star_4900","2007_western-star_4900","2008_western-star_4900","2009_western-star_4900","2010_western-star_4900","2011_western-star_4900"]},{"make":"WESTERN STAR","model":"6900","year_from":2002,"year_to":2011,"match":"exact","vehicle_ids":["2002_western-star_6900","2003_western-star_6900","2004_western-star_6900","2005_western-star_6900","2006_western-star_6900","2007_western-star_6900","2008_western-star_6900","2009_western-star_6900","2010_western-star_6900","2011_western-star_6900"]}],"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":[]}