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Service bulletin SSM121601

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 id629984
Published by NHTSA2002-04-10
Manufacturer's numberSSM121601
Manufacturer's date2001-10-01
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

VEHICLES WITH OPTIONAL HEATER SHUTOFF VALVE, CODE 16554, MAY EXHIBIT KINKING OF THE HEATER HOSE AND REDUCED HEATER PERFORMANCE. *TT

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

Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
INTERNATIONAL HARVESTER 4300
INTERNATIONAL HARVESTER 4400

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