Jeep Grand Cherokee 2025 — technical service bulletin
Bulletin 08-336-25 · NHTSA communication 11024295 · issued Oct 8, 2025
Technical service bulletin
communication type
Electrical System
component
2025
model years
3
vehicle entries
Official summary
Security Gateway Module (SGW) Software Update *The following software enhancements are available: ● Update for Diagnostic Trouble Code (DTC) U3033-00 - Control Module Security Certificate Missing/Invalid. NOTE: This DTC will not turn on the Malfunction Indicator Light (MIL) but is active or stored and cannot clear. ● If a FOTA message appears specifically directing the customer to service OR repeated FOTA events are not being completed, then a manual flash is required for the SGW update. ● SGW is not responding to diagnostics and showing offline.* This bulletin involves flashing the SGW to the
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.