GMC Sierra 2500 2020–2023 — technical service bulletin
Bulletin 23-NA-056 · NHTSA communication 10234180 · issued Mar 31, 2023
Technical service bulletin
communication type
Structure
component
2020–2023
model years
8
vehicle entries
Official summary
This technical bulletin provides a procedure to correct the condition of Wind Whistle Noise at Highway Speeds.
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.