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Service bulletin SBW54-074REV

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 id10172742
Published by NHTSA2020-03-25
Manufacturer's numberSBW54-074REV
Manufacturer's date2020-03-25
NHTSA componentSTEERING; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

NHTSA's summary

Revision for Service Bulletin for Western Star 5700 Pana-Pacific 540 Radio Controls Not Operating Normally. This bulletin replaces the version dated 02/07/2020. Pana-Pacific DEA540 radios (A22-74389-000, A22-77161-000) may cease to respond to volume control settings from the steering wheel switches or the controls on the radio faceplate, resulting in erratic volume control. Information about the firmware version this SB applies to has been included, the 4700 was added to the model list, and part numbers have been corrected.

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, Equipment and accessories, Steering, Software

Vehicles listed
WESTERN STAR 47002020
WESTERN STAR 57002020

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-072020-10-21. Service bulletin. Technical Service Letter for Cold Weather Faults on GHG17/21 DD13 with MCM Software Version 14. Due to colder weather, there may be an increase in the frequency of faults, noted below, on GHG17/21 DD13 trucks built after June 5th 2019. This is due to a calibration issue in the current MCM software (14.1.1.5 or 14.2.1.3). New software is scheduled for release in the first quarter of 2021 that will address these faults.
17TS-05REV22020-10-21. Service bulletin. Revised Technical Service Letter for Detroit DT12 TCM GHG17 Only; Bootloader Update. On Detroit DT12 equipped vehicles, it may be necessary to complete an additional step in the programming process when updating the TCM software.
20CSA-032020-03-06. Service bulletin. Customer Service Announcement saying that Service Pack (SP) 2 for Diagnostic Link 8.11 Standard and Professional will be available for download from the Detroit Diesel server.