{"nhtsa_id":10180286,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-09-28","date":"2020-08-28","document_id":"18-057-20 REV. A","mfr_campaign":null,"replaces":null,"component":"ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM","mfr_system":null,"summary":"Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may comment on one or more of the following:Abnormal Engine noise heard periodically. This noise is caused by Variable Valve Timing (VVT) cleaning cycle. A misfire condition with no Malfunction Indicator Lamp (MIL) illumination or Diagnostic Trouble Codes (DTCs) set. In addition, the following software enhancements are available:Updates to include misfire DTCs.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10180286-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10180286-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10180286","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"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":"WRANGLER","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_jeep_wrangler"]}],"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":[]}