Freightliner Cascadia 2020–2021 — technical service bulletin
Bulletin SS1034762update · NHTSA communication 10185899 · issued Jan 5, 2021
Technical service bulletin
communication type
Equipment
component
2020–2021
model years
2
vehicle entries
Official summary
This Service Solution has been superseded by Service Bulletin SB54-338. Service Solution for P4 Cascadia Front HVAC Evaporator Freezing. Front evaporator freezes creating ice buildup, reducing airflow through the vents.
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.