{"nhtsa_id":10090012,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-02-01","date":"2015-05-21","document_id":"15389","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:MANUAL TRANSMISSION","mfr_system":null,"summary":"15389 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO REPROGRAM THE TRANSMISSION CONTROL MODULE (TCM) ON CERTAIN 2015 MODEL YEAR CADILLAC ESCALADE, ESCALADE ESV, CHEVROLET SILVERADO, GMC SIERRA, YUKON DENALI AND YUKON DENALI XL VEHICLES EQUIPPED WITH AN 8L90 8-SPEED (M5U) TRANSMISSION AND 6.2L (L86) ENGINE. THESE VEHICLES MAY HAVE A CONDITION IN WHICH TRANSMISSION CALIBRATION ALLOWS A HIGHER THAN TARGET ENERGY INPUT TO THE TORQUE CONVERTER CLUTCH (TCC) UNDER CERTAIN CONDITIONS. THIS MAY LEAD TO FASTER THAN EXPECTED TORQUE CONVERTER CLUTCH MATERIAL WEAR, AND A SHUDDER FEELING WHEN THE TCC IS APPLIED.","document":null,"url":"https://open.wenmarpro.com/bulletins/10090012","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"manual-transmission","name":"Manual transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CADILLAC","model":"ESCALADE","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_cadillac_escalade"]},{"make":"CADILLAC","model":"ESCALADE ESV","year_from":2015,"year_to":2015,"match":"base","vehicle_ids":["2015_cadillac_escalade"]},{"make":"CHEVROLET","model":"SILVERADO 1500","year_from":2015,"year_to":2015,"match":"base","vehicle_ids":["2015_chevrolet_silverado"]},{"make":"GMC","model":"SIERRA 1500","year_from":2015,"year_to":2015,"match":"base","vehicle_ids":["2015_gmc_sierra"]},{"make":"GMC","model":"YUKON","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_gmc_yukon"]},{"make":"GMC","model":"YUKON DENALI","year_from":2015,"year_to":2015,"match":"base","vehicle_ids":["2015_gmc_yukon"]},{"make":"GMC","model":"YUKON DENALI XL","year_from":2015,"year_to":2015,"match":"base","vehicle_ids":["2015_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":[]}