{"nhtsa_id":10239947,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-07-31","date":"2023-05-13","document_id":"1804023","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM","mfr_system":null,"summary":"Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following DTCs have been set: ? **P0300-00 - Multiple Cylinder Misfire. ? P0301-00 - Cylinder 1 Misfire Detected. ? P0302-00 - Cylinder 2 Misfire. ? P0303-00 - Cylinder 3 Misfire ? P0304-00 - Cylinder 4 Misfire. ? P0305-00 - Cylinder 5 Misfire. ? P0306-00 - Cylinder 6 Misfire.** ? P05CC-00 - Cold Start A Camshaft Position Timing Performance Bank 1. Customer may also experience the following: ? Poor or insufficient A/C performance during towing or other high torque maneuvers. ? Belt chirp is heard at startup or when A/C cycles on. This bulletin involves reprogramming the PCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239947-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239947-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10239947","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":"transmission-control-module","name":"Transmission control module","parent":"powertrain"}],"codes":["P0300","P0301","P0302","P0303","P0304","P0305","P0306","P05CC"],"topics":[],"vehicles":[{"make":"JEEP","model":"WAGONEER","year_from":2023,"year_to":2023,"match":"exact","vehicle_ids":["2023_jeep_wagoneer"]}],"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":[]}