{"nhtsa_id":10127175,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-01-22","date":"2015-09-01","document_id":"PIP5323","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This Preliminary Information communication provides information to the technician about vehicles with misfires or roughness on cold start up. Technician may find a Diagnostic Trouble Code P0300 stored. Technician will add coolant dye to the system, run engine through warm up, pressurize the cooling system on a cold soak engine and inspect the suspect cylinder with a bore scope for coolant dye evidence. If coolant is found in the cylinder do not replace the cylinder head because that will not repair this concern. Dealer will need to contact General Motors Product Quality Center for engine replacement.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10127175-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10127175-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10127175","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P0300"],"topics":[],"vehicles":[{"make":"CADILLAC","model":"ESCALADE","year_from":2015,"year_to":2016,"match":"exact","vehicle_ids":["2015_cadillac_escalade","2016_cadillac_escalade"]},{"make":"CADILLAC","model":"ESCALADE ESV","year_from":2015,"year_to":2016,"match":"base","vehicle_ids":["2015_cadillac_escalade","2016_cadillac_escalade"]},{"make":"CHEVROLET","model":"CORVETTE","year_from":2014,"year_to":2016,"match":"exact","vehicle_ids":["2014_chevrolet_corvette","2015_chevrolet_corvette","2016_chevrolet_corvette"]},{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2014,"year_to":2016,"match":"base","vehicle_ids":["2014_chevrolet_silverado","2015_chevrolet_silverado","2016_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2015,"year_to":2016,"match":"base","vehicle_ids":["2015_chevrolet_silverado","2016_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2015,"year_to":2016,"match":"base","vehicle_ids":["2015_chevrolet_silverado","2016_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2014,"year_to":2016,"match":"exact","vehicle_ids":["2014_chevrolet_suburban","2015_chevrolet_suburban","2016_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2014,"year_to":2016,"match":"exact","vehicle_ids":["2014_chevrolet_tahoe","2015_chevrolet_tahoe","2016_chevrolet_tahoe"]},{"make":"GMC","model":"SIERRA 1500","year_from":2014,"year_to":2016,"match":"base","vehicle_ids":["2014_gmc_sierra","2015_gmc_sierra","2016_gmc_sierra"]},{"make":"GMC","model":"SIERRA 2500","year_from":2015,"year_to":2016,"match":"base","vehicle_ids":["2015_gmc_sierra","2016_gmc_sierra"]},{"make":"GMC","model":"SIERRA 3500","year_from":2015,"year_to":2016,"match":"base","vehicle_ids":["2015_gmc_sierra","2016_gmc_sierra"]},{"make":"GMC","model":"SIERRA DENALI","year_from":2015,"year_to":2016,"match":"base","vehicle_ids":["2015_gmc_sierra","2016_gmc_sierra"]},{"make":"GMC","model":"YUKON","year_from":2014,"year_to":2016,"match":"exact","vehicle_ids":["2014_gmc_yukon","2015_gmc_yukon","2016_gmc_yukon"]},{"make":"GMC","model":"YUKON XL","year_from":2014,"year_to":2014,"match":"base","vehicle_ids":["2014_gmc_yukon"]},{"make":"GMC","model":"YUKON XL","year_from":2015,"year_to":2016,"match":"exact","vehicle_ids":["2015_gmc_yukon-xl","2016_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":[]}