{"nhtsa_id":10187833,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-03-01","date":"2021-02-19","document_id":"20TS-07REV","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Revised Technical Service Letter for Cold Weather Faults on GHG17/21 DD13 with MCM Software Version 14. Due to colder weather, there may be an increase in the frequency of faults, noted below, on GHG17/21 DD13 trucks built after June 5th 2019. This is due to a calibration issue in the current MCM software (14.1.1.5 or 14.2.1.3). New software is scheduled for release in the first quarter of 2021 that will address these faults.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10187833-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10187833-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10187833","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"114SD","year_from":2020,"year_to":2021,"match":"exact","vehicle_ids":["2020_freightliner_114sd","2021_freightliner_114sd"]},{"make":"FREIGHTLINER","model":"122SD","year_from":2020,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"FREIGHTLINER","model":"CASCADIA","year_from":2020,"year_to":2022,"match":"exact","vehicle_ids":["2020_freightliner_cascadia","2021_freightliner_cascadia","2022_freightliner_cascadia"]},{"make":"WESTERN STAR","model":"4700","year_from":2020,"year_to":2021,"match":"exact","vehicle_ids":["2020_western-star_4700","2021_western-star_4700"]},{"make":"WESTERN STAR","model":"4900","year_from":2020,"year_to":2021,"match":"exact","vehicle_ids":["2020_western-star_4900","2021_western-star_4900"]},{"make":"WESTERN STAR","model":"49X","year_from":2021,"year_to":2021,"match":null,"vehicle_ids":[]},{"make":"WESTERN STAR","model":"5700","year_from":2020,"year_to":2022,"match":"exact","vehicle_ids":["2020_western-star_5700","2021_western-star_5700","2022_western-star_5700"]}],"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":[]}