{"nhtsa_id":615080,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-12-27","date":"1998-07-01","document_id":"877169","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","mfr_system":null,"summary":"INFORMATION PERTAINING TO NEW TRANSMISSION CALIBRATIONS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/615080","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"transmission-control-module","name":"Transmission control module","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"C SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"G VAN","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"K SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"L SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"M SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"S SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"T SERIES","year_from":1998,"year_to":1998,"match":"exact","vehicle_ids":["1998_chevrolet_t-series"]},{"make":"GMC","model":"C SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"G VAN","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"K SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"L SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"M SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"S SERIES","year_from":1998,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"T SERIES","year_from":1998,"year_to":1998,"match":"exact","vehicle_ids":["1998_gmc_t-series"]},{"make":"OLDSMOBILE","model":"BRAVADA","year_from":1998,"year_to":1998,"match":"exact","vehicle_ids":["1998_oldsmobile_bravada"]}],"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":[]}