{"nhtsa_id":10090050,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-02-01","date":"2015-04-02","document_id":"14634","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"14634 -SPECIAL COVERAGE (MESSAGE ONLY - POPULATION CHANGE). PLEASE BE ADVISED 2010-2014 CHEVROLET EXPRESS AND GMC SAVANA VEHICLES EQUIPPED WITH A 6.6L DIESEL ENGINE (LMM/LGH), 5.3L FLEX-FUEL ENGINE (LMF), OR A 6.0L LIQUID PROPANE/COMPRESSED NATURAL GAS ENGINE (LC8) ARE NOT INCLUDED IN THIS PROGRAM BUT WERE INADVERTENTLY INCLUDED.","document":null,"url":"https://open.wenmarpro.com/bulletins/10090050","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"EXPRESS","year_from":2010,"year_to":2014,"match":"exact","vehicle_ids":["2010_chevrolet_express","2011_chevrolet_express","2012_chevrolet_express","2013_chevrolet_express","2014_chevrolet_express"]},{"make":"GMC","model":"SAVANA","year_from":2011,"year_to":2014,"match":"exact","vehicle_ids":["2011_gmc_savana","2012_gmc_savana","2013_gmc_savana","2014_gmc_savana"]}],"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":[]}