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Service bulletin FSB13-17

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 id10125017
Published by NHTSA2017-12-08
Manufacturer's numberFSB13-17
Manufacturer's date2017-11-21
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

FIX-AS-FAIL - Vehicles with with an Eaton UltraShift Transmission or Fuller Advantage Transmission may exhibit a fault code in DAVIE4 log file. Fault code U1548 in the DAVIE4 log file and no fault lamp illuminated needs update to the transmission software.

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

Electrical system, Software

Trouble codes named

U1548

Vehicles listed
PACCAR PACCAR

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