{"nhtsa_id":10030936,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2009-12-23","date":"2009-07-09","document_id":"SB-18-020-09","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE","mfr_system":null,"summary":"JEEP: MIL ILLUMINATION AND/OR MDS DRIVEABILITY IMPROVEMENTS. THIS INVOLVES SELECTIVELY ERASING AND REPROGRAMMING THE POWERTRAIN CONTROL MODULE (PCM) WITH NEW SOFTWARE. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10030936","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":"JEEP","model":"COMMANDER","year_from":2009,"year_to":2009,"match":"exact","vehicle_ids":["2009_jeep_commander"]},{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2009,"year_to":2009,"match":"exact","vehicle_ids":["2009_jeep_grand-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":[]}