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Service bulletin 20TS-01

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 id10170603
Published by NHTSA2020-01-22
Manufacturer's number20TS-01
Manufacturer's date2020-01-21
NHTSA componentENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

Technical Service Letter for DDC Series 60 engines concerning Series 60 Cylinder Head Resurfacing/Finish. Detroit Diesel does not recommend third party resurfacing of Series 60 cylinder heads (outside of Detroit and Detroit Reman).

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, Equipment and accessories

Vehicles listed
FREIGHTLINER CASCADIA2007, 2008, 2009, 2010, 2011
FREIGHTLINER CENTURY CLASS2002 to 2011
FREIGHTLINER COLUMBIA1999 to 2000
FREIGHTLINER COLUMBIA2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
FREIGHTLINER CORONADO2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
WESTERN STAR 47002002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
WESTERN STAR 48002004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
WESTERN STAR 49002002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
WESTERN STAR 69002002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011

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

Recalls for the same vehicles and component
20176362017-12-18. Accessories
17V8100002017-12-15. EQUIPMENT
14V6800002014-10-29. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
14V0800002014-02-21. ENGINE AND ENGINE COOLING:ENGINE
12V4050002012-08-16. EQUIPMENT
12V0740002012-02-28. ENGINE AND ENGINE COOLING:ENGINE:DIESEL
11V6050002011-12-27. ENGINE AND ENGINE COOLING:ENGINE:DIESEL
20114392011-12-22. Engine
11V4740002011-09-15. ENGINE AND ENGINE COOLING
20111412011-03-29. Engine

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SB83-1372022-04-01. Service bulletin. Revised Freightliner Service Bulletin for ParkSmart Eberspaecher Auxiliary Heater Service. This bulletin replaces the version dated May 2015. The note in General Information has been revised to include New Cascadia. Espar information has been changed to reflect a company name change to Eberspaecher.
14 TS- 13REV2021-06-10. Service bulletin. "Major fuel system damage can occur when DEF is introduced into the fuel system. A no-start condition, engine overspeed, or engine ran backwards complaints can all be caused by DEF in the fuel system. Likewise, DEF system damage can occur when diesel fuel is introduced into the DEF system. DEF quality fault codes (SPN 3364) and NOx conversion fault codes (SPN 4364) can be caused by diesel fuel in the DEF system."
WSTCAE180-20202021-05-18. Service bulletin. Portland Truck Plant Paint Changes
WSTCAE177-20202021-05-18. Service bulletin. Meritor Transfer Case Updates
FAB1532021-05-18. Service bulletin. Freightliner Action Bulletin FAB153 New Harness Highway for Cascadia
FAB1442021-05-18. Service bulletin. Freightliner Action Bulletin FAB144 Smartway Certification
TSN 31-062021-05-13. Service bulletin. TSN for the Thermo King Tripac APU located on the right hand frame rail back of cab / sleeper is installed such that the top of the APU is 76mm (3 inches) above the top flange of the frame rail. Under certain turning conditions and fifth wheel configurations it is possible for the trailer to contact the top cover of the Tripac APU.
SB831332021-05-10. Service bulletin. New H02 and H03 A/C lines.
SB49342021-05-10. Service bulletin. DEF Tank Coolant Valve O-Ring Kit
TechTalk566564K2021-05-07. Service bulletin. Tech Talk discussion on DD13 rail pressure woes.