{"nhtsa_id":10201680,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-09-29","date":"2021-09-10","document_id":"CALWS83-001","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; VISIBILITY","mfr_system":null,"summary":"Customer Advisory Letter for HVAC Actuator Wiring Harness. The wiring harness of the actuator of the fresh air recirculation door, shown in Fig. 1, on Western Star vehicles equipped with Red Dot HVAC systems should be inspected for signs of water intrusion and corrosion.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10201680-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10201680-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10201680","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"visibility","name":"Glass, wipers and mirrors","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"WESTERN STAR","model":"4700","year_from":2006,"year_to":2021,"match":"exact","vehicle_ids":["2006_western-star_4700","2007_western-star_4700","2008_western-star_4700","2009_western-star_4700","2010_western-star_4700","2011_western-star_4700","2012_western-star_4700","2013_western-star_4700","2014_western-star_4700","2015_western-star_4700","2016_western-star_4700","2017_western-star_4700","2018_western-star_4700","2019_western-star_4700","2020_western-star_4700","2021_western-star_4700"]},{"make":"WESTERN STAR","model":"4800","year_from":2006,"year_to":2021,"match":"exact","vehicle_ids":["2006_western-star_4800","2007_western-star_4800","2008_western-star_4800","2009_western-star_4800","2010_western-star_4800","2011_western-star_4800","2012_western-star_4800","2013_western-star_4800","2014_western-star_4800","2015_western-star_4800","2016_western-star_4800","2017_western-star_4800","2018_western-star_4800","2019_western-star_4800","2020_western-star_4800","2021_western-star_4800"]},{"make":"WESTERN STAR","model":"4900","year_from":2006,"year_to":2021,"match":"exact","vehicle_ids":["2006_western-star_4900","2007_western-star_4900","2008_western-star_4900","2009_western-star_4900","2010_western-star_4900","2011_western-star_4900","2012_western-star_4900","2013_western-star_4900","2014_western-star_4900","2015_western-star_4900","2016_western-star_4900","2017_western-star_4900","2018_western-star_4900","2019_western-star_4900","2020_western-star_4900","2021_western-star_4900"]}],"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":[]}