Freightliner Cascadia 2017–2021 — technical service bulletin
Bulletin SB60-175 · NHTSA communication 10200624 · issued Apr 27, 2021
Technical service bulletin
communication type
Visibility
component
2017–2021
model years
5
vehicle entries
Official summary
Freightliner Service Bulletin for Auxiliary Mirror Vibration. Cascadia trucks built from January 1, 2017 through June 16, 2020 may be equipped with auxiliary mirrors that vibrate or wobble. A service kit (part number 22-77791-500) is available to resolve the issue.
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.