{"nhtsa_id":10239921,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-07-31","date":"2023-05-03","document_id":"0811323","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; POWER TRAIN","mfr_system":null,"summary":"Flash: Drivetrain Control Module (DTCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) or warning lamp illumination. Upon further investigation the technician may find that the multiple Diagnostic Trouble Codes (DTCs) have been set: ? C1403-29 - Transfer Case Range Position Sensor-Signal Invalid. ? C14AA-62 - Transfer Case Motor Position Sensor Supply-Signal Compare Failure. This bulletin involves reprogramming the DTCM with the latest software available.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239921-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239921-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10239921","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["C1403","C14AA"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2022,"year_to":2022,"match":"exact","vehicle_ids":["2022_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":[]}