Jeep Gladiator 2020–2021 — technical service bulletin
Bulletin 9004104 · NHTSA communication 10221103 · issued Apr 14, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2020–2021
model years
4
vehicle entries
Official summary
Valve Cover & Gasket Engineering is looking for information on the Pentastar valve cover due to gasket oil leaks. Please review the valve cover for a white paint dot/mark directly between the 2 cam actuators on the front of the valve cover. If found, please contact the following engineers for further information FCA Redacted Content, or FCA Redacted Content If no response in 15 minutes, proceed with repair.
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.