Jeep Wrangler 2018–2021 — technical service bulletin

Bulletin S2123000029 · NHTSA communication 10230023 · issued May 7, 2021

Technical service bulletin

communication type

Back Over Prevention

component

2018–2021

model years

vehicle entries

Official summary

Squeak and or Chirp Noise From Lift Gate Glass

Vehicles covered

2018 Jeep Wrangler
2019 Jeep Wrangler
2020 Jeep Wrangler
2021 Jeep Wrangler

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.