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Service bulletin 20-73

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10128773
Published by NHTSA2018-02-12
Manufacturer's number20-73
Manufacturer's date2014-07-01
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY

NHTSA's summary

20-73 - CANCELED: Cascadia Radiator Update?EPA10 with DDC Engines

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Cooling system, Radiator

Vehicles listed
FCCC S2G2013
FCCC S2G2018
FCCC XCM2018
FCCC XCP2014 to 2016
FCCC XCR2010
FCCC XCR2014 to 2016
FCCC redundant CUSTOM CHASSIS2008 to 2009
FCCC redundant CUSTOM CHASSIS S22010
FCCC redundant CUSTOM CHASSIS XB2010 to 2013
FCCC redundant CUSTOM CHASSIS XC2010 to 2013
FCCC redundant CUSTOM CHASSIS XCM2018
FCCC redundant CUSTOM CHASSIS XCP2018
FCCC redundant S2G2014 to 2017
FREIGHTLINER 1085D2009 to 2018
FREIGHTLINER 108SD2000
FREIGHTLINER 108SD2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
FREIGHTLINER 108SD2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
FREIGHTLINER 1145D2000 to 2003
FREIGHTLINER 1145D2007 to 2018
FREIGHTLINER 114SD2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
FREIGHTLINER 122SD2007 to 2018
FREIGHTLINER ARGOSY2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
FREIGHTLINER ARGOSY GLIDER2015 (the catalog's model; the bulletin names a series or trim of it)
FREIGHTLINER ARGOSY RHD2008 (the catalog's model; the bulletin names a series or trim of it)
FREIGHTLINER B2 BUS CHASSIS2012
FREIGHTLINER BUSINESS CLASS M22008 to 2017
FREIGHTLINER BUSINESS CLASS M2 106V2005 to 2009
FREIGHTLINER BUSINESS CLASS M2 106V2011
FREIGHTLINER CASCADIA2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
FREIGHTLINER CENTURY2005 to 2013
FREIGHTLINER CENTURY CLASS2002 to 2017
FREIGHTLINER CLASSIC XL2005, 2006, 2007, 2008, 2009, 2010, 2011 (the catalog's model; the bulletin names a series or trim of it)
FREIGHTLINER COLUMBIA2002, 2003
FREIGHTLINER COLUMBIA2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
FREIGHTLINER COLUMBIA GLIDER2011, 2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
FREIGHTLINER CONDOR2001, 2002, 2003, 2004, 2005, 2006, 2007
FREIGHTLINER CORONADO2002, 2003
FREIGHTLINER CORONADO2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
FREIGHTLINER CORONADO GLIDER2016 (the catalog's model; the bulletin names a series or trim of it)
FREIGHTLINER FLD2004 to 2011
FREIGHTLINER FLD CLASSIC2008
FREIGHTLINER M22005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
FREIGHTLINER M2 BUSINESS CLASS2018
FREIGHTLINER MT452007 to 2014
FREIGHTLINER MT45G2011 to 2014
FREIGHTLINER MT552008 to 2014
FREIGHTLINER MT552016
FREIGHTLINER MT55G2011 to 2014
FREIGHTLINER SPRINTER 25002006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 (the catalog's model; the bulletin names a series or trim of it)
FREIGHTLINER SPRINTER 35002006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 (the catalog's model; the bulletin names a series or trim of it)
FREIGHTLINER WESTERN STAR2011 to 2012
FREIGHTLINER X-LINE2008 to 2009
FREIGHTLINER X-LINE2016
FREIGHTLINER XCS2010
FREIGHTLINER CUSTOM CHASS XCM2017
FREIGHTLINER CUSTOM CHASS XCP2017 to 2018
FREIGHTLINER CUSTOM CHASS XCR2017

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
SB20-582021-05-24. Service bulletin. Early EPA07 QLD Radiator Replacement. As part of the changes made for early production EPA07 engines, the transmission oil cooler was moved into the radiator, and transmission oil cooler lines equipped with Gates Quick-Detach (QLD) connectors were fitted.
18SP7362020-10-01. Service bulletin. Detroit Diesel Special Publication informing about Heavy Duty Friction Style Belt Tensioner Kit. This heavy duty friction style belt tensioner kit contains the belt tensioner and two M10 bolts to correctly pin the friction style belt tensioner. The M10x80mm bolt is used to pin the engine cooling fan drive arm. The M10x50mm bolt is used to pin the engine accessory drive arm.
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sb20782019-04-01. Service bulletin. Cascadia Radiator Strut Rod Rubbing on Upper Radiator Hose
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0318-172018-06-18. Service bulletin. (MCM) (GHG17)
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