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Service bulletin 301-15

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 id10141941
Published by NHTSA2018-06-18
Manufacturer's number301-15
Manufacturer's date2015-03-01
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

NHTSA's summary

301-15 SPN 3251 (ACM) (EPA10) and (ACM) (GHG14), 3936 (ACM)

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, Exhaust and emissions, Catalytic converter

Vehicles listed
FREIGHTLINER 114SD2010, 2011, 2012, 2013, 2014, 2015, 2016
FREIGHTLINER 122SD2010 to 2016
FREIGHTLINER BUSINESS CLASS M22010 to 2016
FREIGHTLINER CASCADIA2010, 2011, 2012, 2013, 2014, 2015, 2016
FREIGHTLINER COLUMBIA2010, 2011, 2012, 2013, 2014, 2015, 2016
FREIGHTLINER CORONADO2010, 2011, 2012, 2013, 2014, 2015, 2016
STERLING A-LINE2010 to 2016
WESTERN STAR 47002010, 2011, 2012, 2013, 2014, 2015, 2016
WESTERN STAR 49002010, 2011, 2012, 2013, 2014, 2015, 2016

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
0328-172018-06-18. Service bulletin. (ACM) (GHG17)
0327-172018-06-18. Service bulletin. (ACM) (GHG17)
0308-172018-06-18. Service bulletin. (ACM) (GHG17)
305-152018-06-18. Service bulletin. 305-15 EPA10 Diesel Oxidation Catalyst Inlet Pressure Sensor
1205-152018-03-13. Service bulletin. 1205-15 Selective Catalyst Reduction (SCR) Inlet Temperature Sensor