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Service bulletin 18-020

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 id10146287
Published by NHTSA2018-10-29
Manufacturer's number18-020
Manufacturer's date2018-05-07
NHTSA componentEQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

DTNA is adjusting six Standard Repair Times (SRTs) for Detroit Heavy Duty Engine Platform (HDEP) nodels in certain vehicle models. The new times are effective immediately.

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
DETROIT DETROIT
FCCC FCCC
FREIGHTLINER FREIGHTLINER
STERLING STERLING
THOMAS BUILT BUSES THOMAS BUILT BUSES
WESTERN STAR WESTERN STAR

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