{"nhtsa_id":10057068,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2015-04-08","date":"2014-11-01","document_id":"CSP-14730","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER","mfr_system":null,"summary":"CHEVROLET/GMC: DRIVELINE VIBRATIONS OR SHUDDER FEELING ARE DUE TO FRICTION MATERIAL WEAR ON FASTER TORQUE CONVERTER CLUTCH WHEN PULLING TRAILERS AND/OR VEHICLES AND EXCEED TARGET ENERGY INPUT. MODEL 2010-14 EXPRESS, SAVANA. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10057068","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"torque-converter","name":"Torque converter","parent":"powertrain"}],"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":2010,"year_to":2014,"match":"exact","vehicle_ids":["2010_gmc_savana","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":[]}