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Service bulletin TSB 15-023

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 id10076217
Published by NHTSA2016-07-07
Manufacturer's numberTSB 15-023
Manufacturer's date2015-12-01
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS; EQUIPMENT

NHTSA's summary

Certain vehicles manufactured with an Sure Power 24V power equalizer may be at risk for water intrusion. The equalizer will be replaced with a new Sure Power 24V power equalizer with enhanced environmental protection.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Equipment and accessories, Cooling system

Vehicles listed
FREIGHTLINER FREIGHTLINER

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