Freightliner Cascadia 2017–2022 — technical service bulletin
Bulletin SB60-174 · NHTSA communication 10185690 · issued Jan 20, 2021
Technical service bulletin
communication type
Structure
component
2017–2022
model years
6
vehicle entries
Official summary
Freightliner Service Bulletin for Replacement Cab Doors with Pre-Drilled Holes. Replacement doors for New Cascadia vehicles are now pre-drilled with two holes for the installation of turning vanes. If turning vanes are not installed, the pre-drilled holes need to be plugged with ratchet fasteners.
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.