{"nhtsa_id":10114264,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2014-11-19","document_id":"PI1343A","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","mfr_system":null,"summary":"This preliminary bulletin provides a procedure to reprogram the tcm to correct the customers concern of a harsh, tie up feeling from a 6-4 downshift.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10114264-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10114264-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10114264","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"software","name":"Software","parent":"electrical"},{"id":"transmission-control-module","name":"Transmission control module","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"AVALANCHE","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_chevrolet_avalanche"]},{"make":"CHEVROLET","model":"SILVERADO 2500","year_from":2012,"year_to":2012,"match":"base","vehicle_ids":["2012_chevrolet_silverado"]},{"make":"CHEVROLET","model":"SUBURBAN","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_chevrolet_suburban"]},{"make":"CHEVROLET","model":"TAHOE","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_chevrolet_tahoe"]},{"make":"GMC","model":"SIERRA 2500","year_from":2012,"year_to":2012,"match":"base","vehicle_ids":["2012_gmc_sierra"]},{"make":"GMC","model":"SIERRA DENALI","year_from":2012,"year_to":2012,"match":"base","vehicle_ids":["2012_gmc_sierra"]},{"make":"GMC","model":"YUKON","year_from":2012,"year_to":2012,"match":"exact","vehicle_ids":["2012_gmc_yukon"]},{"make":"GMC","model":"YUKON DENALI","year_from":2012,"year_to":2012,"match":"base","vehicle_ids":["2012_gmc_yukon"]},{"make":"GMC","model":"YUKON DENALI XL","year_from":2012,"year_to":2012,"match":"base","vehicle_ids":["2012_gmc_yukon"]},{"make":"GMC","model":"YUKON XL","year_from":2012,"year_to":2012,"match":"base","vehicle_ids":["2012_gmc_yukon"]}],"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":[]}