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Service bulletin sbt5420

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 id10129616
Published by NHTSA2018-03-05
Manufacturer's numbersbt5420
Manufacturer's date2015-03-01
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

sbt5420 Guidelines for Repairing or Replacing an Electrical Harness

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

Vehicles listed
THOMAS BUILT BUSES SAF-T-LINER C22001 to 2019

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