{"nhtsa_id":10000459,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-02-27","date":"2002-11-01","document_id":"020730033A","mfr_campaign":null,"replaces":"020730033","component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","mfr_system":null,"summary":"TRANSMISSION CONTROL MODULE (TCM) WILL NOT COMMUNICATE WITH NON-TECH 2 SERVICE OR TEST EQUIPMENT. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10000459","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":"CADILLAC","model":"CTS","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_cadillac_cts"]}],"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":[]}