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Service bulletin 8374

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 id608291
Published by NHTSA1999-11-18
Manufacturer's number8374
Manufacturer's date2009-06-01
Replaces83-74
NHTSA componentEQUIPMENT:APPLIANCE:AIR CONDITIONER

NHTSA's summary

SUBJECT REGARDING BINARY SWITCH RETROFIT FOR CERTAIN VEHICLES. THIS BULLETIN REPLACES THE VERSION DATED JUNE 1999. *TT UPDATED 10/14/09. *PE

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

Equipment and accessories, Heating and air conditioning

Vehicles listed
FREIGHTLINER BUSINESS CLASS
FREIGHTLINER FLB
FREIGHTLINER FLD

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