Jeep Grand Cherokee 2022 — technical service bulletin
Bulletin 0811423 · NHTSA communication 10239919 · issued May 3, 2023
Technical service bulletin
communication type
Back Over Prevention
component
2022
model years
1
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 disconnect is disengaged. (The noise can happen more as the ambient temperatures become colder.) This bulletin involves reprogramming the DTCM with the latest software available.
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.