{"nhtsa_id":10180321,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-09-28","date":"2020-08-21","document_id":"20NA166","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This informational bulletin advises the technician of possible coolant entering the areas of the engine, either through failed parts or defects in the castings, that may be the cause of the concerns related to the MIL or the engine running rough.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10180321-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10180321-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10180321","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"CTS","year_from":2015,"year_to":2019,"match":"exact","vehicle_ids":["2015_cadillac_cts","2016_cadillac_cts","2017_cadillac_cts","2018_cadillac_cts","2019_cadillac_cts"]},{"make":"CADILLAC","model":"ESCALADE","year_from":2015,"year_to":2020,"match":"exact","vehicle_ids":["2015_cadillac_escalade","2016_cadillac_escalade","2017_cadillac_escalade","2018_cadillac_escalade","2019_cadillac_escalade","2020_cadillac_escalade"]},{"make":"CADILLAC","model":"ESCALADE ESV","year_from":2015,"year_to":2016,"match":"base","vehicle_ids":["2015_cadillac_escalade","2016_cadillac_escalade"]},{"make":"CADILLAC","model":"ESCALADE ESV","year_from":2017,"year_to":2020,"match":"exact","vehicle_ids":["2017_cadillac_escalade-esv","2018_cadillac_escalade-esv","2019_cadillac_escalade-esv","2020_cadillac_escalade-esv"]},{"make":"CHEVROLET","model":"CAMARO","year_from":2016,"year_to":2020,"match":"exact","vehicle_ids":["2016_chevrolet_camaro","2017_chevrolet_camaro","2018_chevrolet_camaro","2019_chevrolet_camaro","2020_chevrolet_camaro"]},{"make":"CHEVROLET","model":"CORVETTE","year_from":2016,"year_to":2019,"match":"exact","vehicle_ids":["2016_chevrolet_corvette","2017_chevrolet_corvette","2018_chevrolet_corvette","2019_chevrolet_corvette"]},{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2014,"year_to":2014,"match":"base","vehicle_ids":["2014_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2017,"year_to":2020,"match":"base","vehicle_ids":["2017_chevrolet_silverado","2018_chevrolet_silverado","2019_chevrolet_silverado","2020_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2015,"year_to":2019,"match":"base","vehicle_ids":["2015_chevrolet_silverado","2016_chevrolet_silverado","2017_chevrolet_silverado","2018_chevrolet_silverado","2019_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 4500","year_from":2019,"year_to":2019,"match":"base","vehicle_ids":["2019_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2015,"year_to":2020,"match":"exact","vehicle_ids":["2015_chevrolet_suburban","2016_chevrolet_suburban","2017_chevrolet_suburban","2018_chevrolet_suburban","2019_chevrolet_suburban","2020_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2015,"year_to":2020,"match":"exact","vehicle_ids":["2015_chevrolet_tahoe","2016_chevrolet_tahoe","2017_chevrolet_tahoe","2018_chevrolet_tahoe","2019_chevrolet_tahoe","2020_chevrolet_tahoe"]},{"make":"GMC","model":"SIERRA 1500","year_from":2014,"year_to":2014,"match":"base","vehicle_ids":["2014_gmc_sierra"]},{"make":"GMC","model":"SIERRA 1500","year_from":2019,"year_to":2020,"match":"base","vehicle_ids":["2019_gmc_sierra","2020_gmc_sierra"]},{"make":"GMC","model":"SIERRA 2500","year_from":2015,"year_to":2018,"match":"base","vehicle_ids":["2015_gmc_sierra","2016_gmc_sierra","2017_gmc_sierra","2018_gmc_sierra"]},{"make":"GMC","model":"SIERRA DENALI","year_from":2015,"year_to":2019,"match":"base","vehicle_ids":["2015_gmc_sierra","2016_gmc_sierra","2017_gmc_sierra","2018_gmc_sierra","2019_gmc_sierra"]},{"make":"GMC","model":"YUKON","year_from":2015,"year_to":2020,"match":"exact","vehicle_ids":["2015_gmc_yukon","2016_gmc_yukon","2017_gmc_yukon","2018_gmc_yukon","2019_gmc_yukon","2020_gmc_yukon"]},{"make":"GMC","model":"YUKON XL","year_from":2015,"year_to":2020,"match":"exact","vehicle_ids":["2015_gmc_yukon-xl","2016_gmc_yukon-xl","2017_gmc_yukon-xl","2018_gmc_yukon-xl","2019_gmc_yukon-xl","2020_gmc_yukon-xl"]}],"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":[]}