{"nhtsa_id":10058756,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2015-11-13","date":"2015-06-01","document_id":"SC-15111","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"GMC/CHEVROLET: TSB CONTAINS AN OWNER'S NOTIFICATION LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. WHEN SHIFTING FROM FIRST GEAR TO SECOND GEAR, HARSH SHIFTING IS EXPERIENCE AND MALFUNCTION INDICATOR LAMP (MIL) WILL ILLUMINATE. MODEL 2012 SILVERADO, EXPRESS, COLORADO, SIERRA, SAVANA, CANYON. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10058756","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"COLORADO","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_chevrolet_colorado"]},{"make":"CHEVROLET","model":"EXPRESS","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_chevrolet_express"]},{"make":"CHEVROLET","model":"SILVERADO","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_chevrolet_silverado"]},{"make":"GMC","model":"CANYON","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_gmc_canyon"]},{"make":"GMC","model":"SAVANA","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_gmc_savana"]},{"make":"GMC","model":"SIERRA","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["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":[]}