Jeep Wrangler 2018–2021 — technical service bulletin
Bulletin S2023000020 Rev. · NHTSA communication 10194013 · issued Apr 23, 2021
Technical service bulletin
communication type
Power Train
component
2018–2021
model years
4
vehicle entries
Official summary
Tick Noise From A-pillar Front Power Top Side Rail
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.