{"nhtsa_id":10123495,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-11-17","date":"2015-09-18","document_id":"GCUS-3-289","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"14287 - Customer Satisfaction Program. On certain 2003-2015 model year Chevrolet Express, 2003-2007 Chevrolet Silverado, 2008-2013 Chevrolet Silverado HD, 2003-2015 GMC Savana, 2003-2007 GMC Sierra 3500, and 2007-2012 GMC Sierra HD model vehicles equipped with a Duramax diesel engine and an engine-block heater (RPO YF2 and K05), continuously activating the engine-block heater through Ambulance body up fit ?shore power? may cause excessive heat buildup, cause a high-resistance short, damage the engine-block heater, or, in rare cases, melt electrical connections or cause an engine-compartment fire. Dealers are to: Replace block heater element with a revised heater equipped with EPDM O-Rings, shorter bolt and improved torque & angle. Disconnect the coolant heater from being powered whenever ?shore power? is plugged in. Add a label to the current cord, ?Avoid continuous use, for Cold Start Only?, unless the cord is damaged at either end, then replace the original cord. Provide the customer with an Owner?s Manual Insert found at the end of this bulletin.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10123495-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2015/MC-10123495-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10123495","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"EXPRESS","year_from":2013,"year_to":2013,"match":"exact","vehicle_ids":["2013_chevrolet_express"]},{"make":"CHEVROLET","model":"EXPRESS","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_chevrolet_express"]},{"make":"CHEVROLET","model":"EXPRESS 1500","year_from":2011,"year_to":2011,"match":"base","vehicle_ids":["2011_chevrolet_express"]},{"make":"CHEVROLET","model":"EXPRESS 3500","year_from":2003,"year_to":2010,"match":"base","vehicle_ids":["2003_chevrolet_express","2004_chevrolet_express","2005_chevrolet_express","2006_chevrolet_express","2007_chevrolet_express","2008_chevrolet_express","2009_chevrolet_express","2010_chevrolet_express"]},{"make":"CHEVROLET","model":"EXPRESS 3500","year_from":2012,"year_to":2012,"match":"base","vehicle_ids":["2012_chevrolet_express"]},{"make":"CHEVROLET","model":"EXPRESS 3500","year_from":2014,"year_to":2014,"match":"base","vehicle_ids":["2014_chevrolet_express"]},{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2008,"year_to":2011,"match":"base","vehicle_ids":["2008_chevrolet_silverado","2009_chevrolet_silverado","2010_chevrolet_silverado","2011_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2012,"year_to":2012,"match":"base","vehicle_ids":["2012_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2003,"year_to":2007,"match":"base","vehicle_ids":["2003_chevrolet_silverado","2004_chevrolet_silverado","2005_chevrolet_silverado","2006_chevrolet_silverado","2007_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SILVERADO 3500","year_from":2013,"year_to":2013,"match":"base","vehicle_ids":["2013_chevrolet_silverado"]},{"make":"GMC","model":"SAVANA 3500","year_from":2003,"year_to":2015,"match":"base","vehicle_ids":["2003_gmc_savana","2004_gmc_savana","2005_gmc_savana","2006_gmc_savana","2007_gmc_savana","2008_gmc_savana","2009_gmc_savana","2010_gmc_savana","2011_gmc_savana","2012_gmc_savana","2013_gmc_savana","2014_gmc_savana","2015_gmc_savana"]},{"make":"GMC","model":"SIERRA 3500","year_from":2003,"year_to":2007,"match":"base","vehicle_ids":["2003_gmc_sierra","2004_gmc_sierra","2005_gmc_sierra","2006_gmc_sierra","2007_gmc_sierra"]},{"make":"GMC","model":"SIERRA DENALI","year_from":2007,"year_to":2012,"match":"base","vehicle_ids":["2007_gmc_sierra","2008_gmc_sierra","2009_gmc_sierra","2010_gmc_sierra","2011_gmc_sierra","2012_gmc_sierra"]}],"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":[]}