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Service bulletin TSB538B

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 id10125501
Published by NHTSA2017-12-14
Manufacturer's numberTSB538B
Manufacturer's date2017-02-01
NHTSA componentENGINE

NHTSA's summary

In the event that the APU system has indicated an overheating condition, but no faults are found in the cooling system, please follow the steps in TSB-538 for performing a detailed inspection and diagnosis of the overheat sensor.

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

Vehicles listed
CARSON CARRIER2000

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