Jeep Grand Cherokee 2021 — technical service bulletin
Bulletin 1400922 · NHTSA communication 10221479 · issued Jun 9, 2022
Technical service bulletin
communication type
Fuel System, Gasoline
component
2021
model years
1
vehicle entries
Official summary
Fuel Line Buzz Vibration Noise This bulletin involves isolating the fuel lines from the chassis. A customer may not notice a Buzz, Squeak or Rattle (BSR) noise coming from the front of the vehicle while driving at 1000 to 1500 RPM.
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.