Freightliner Cascadia 2009–2011 — technical service bulletin
Bulletin 20-73 · NHTSA communication 10140961 · issued Aug 1, 2013
Technical service bulletin
communication type
Engine and Engine Cooling
component
2009–2011
model years
3
vehicle entries
Official summary
20-73 - Cascadia Radiator Update?EPA10
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.