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Service bulletin SB232016

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 id620781
Published by NHTSA2001-08-29
Manufacturer's numberSB232016
Manufacturer's date2001-07-10
ReplacesSB232016
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

SUBJECT REGARDING COOLING SYSTEM ENHANCEMENTS FOR MODEL CHASSIS EQUIPPED WITH EITHER AN E-TECH 427 OR 460 ENGINE EXPERIENCING HIGHER THAN NORMAL ENGINE OPERATING TEMPERATURES. *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
MACK CX

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