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Service bulletin TechTalk7270

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 id10180366
Published by NHTSA2020-09-30
Manufacturer's numberTechTalk7270
Manufacturer's date2020-09-03
NHTSA componentENGINE AND ENGINE COOLING; EQUIPMENT

NHTSA's summary

Tech Talk discussion on 60 Series surge during regen.

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
WESTERN STAR 48002008

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
20TS-012020-01-22. Service bulletin. 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).
17TS92019-10-25. Service bulletin. Technical Service Letter communicating that information on DD Heavy Duty Platform Belt and Belt Tensioner can be found on TechLit.
19TL-152019-09-28. Service bulletin. Tool Letter for ICC5 Programming Cable