Jeep Grand Cherokee 2023 — technical service bulletin
Bulletin 08-020-25 · NHTSA communication 11013513 · issued Jan 29, 2025
Technical service bulletin
communication type
Power Train
component
2023
model years
3
vehicle entries
Official summary
"Flash: Drivetrain Control Module (DTCM) Updates A moaning, grinding, or groaning type noise while driving between 80 - 112 kph (50 - 70 mph). Noise is not heard when the front axle is disengaged. (The noise can happen more as the ambient temperatures become colder). This bulletin involves reprogramming the DTCM with the latest software available."
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.