Chevrolet Trailblazer 2021–2024 — technical service bulletin
Bulletin 23-NA-218 · NHTSA communication 10247551 · issued Dec 14, 2023
Technical service bulletin
communication type
Structure
component
2021–2024
model years
4
vehicle entries
Official summary
This service bulletin provides repair information to correct a customer concern of a Rear Side Door Weatherstrip Coming Loose.
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.