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Service bulletin SF237A

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 id629528
Published by NHTSA2002-04-04
Manufacturer's numberSF237A
Manufacturer's date2002-01-01
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

SUBJECT REGARDING AMEND ANTIFREEZE CONCENTRATION TO CORRECT FREEZE POINT. *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

Engine, Cooling system

Vehicles listed
FREIGHTLINER ARGOSY2001
FREIGHTLINER BUSINESS CLASS2001
FREIGHTLINER CENTURY2001
FREIGHTLINER COLUMBIA2001
FREIGHTLINER CORONADO2001

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

Other bulletins for the same vehicles and component
sb20582018-06-18. Service bulletin. sb2058 Early EPA07 QLD Radiator Replacement
sb20512018-06-18. Service bulletin. sb2051 Radiator Surge Tank Vent Line Plumbing