Jeep Grand Wagoneer 2023 — technical service bulletin
Bulletin 08-002-26 · NHTSA communication 11027623 · issued Jan 7, 2026
Technical service bulletin
communication type
Electrical System
component
2023
model years
2
vehicle entries
Official summary
Drivetrain Control Module (DTCM) Updates Customers may experience one or more of the following: ● Rear axle bind during slow speed turning. Feels like the 4WD is active. ● While moving above 5 kph (3.1 mph) transmission goes into limp mode This bulletin involves reprogramming the DTCM with the latest available software.
Vehicles covered
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.