{"nhtsa_id":604100,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-04-13","date":"1999-02-12","document_id":"210199","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","mfr_system":null,"summary":"SUBJECT REGARDING SHIFT QUALITY IMPROVEMENTS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/604100","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":"JEEP","model":"CHEROKEE","year_from":1999,"year_to":1999,"match":"exact","vehicle_ids":["1999_jeep_cherokee"]}],"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":[]}