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Service bulletin 121024

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 id10000515
Published by NHTSA2003-02-28
Manufacturer's number121024
Manufacturer's date2002-11-08
Replaces121024
NHTSA componentSTRUCTURE:FRAME AND MEMBERS

NHTSA's summary

SEVERE SERVICE BACK-OF-CAB CROSSMEMBERS. *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

Body and frame

Vehicles listed
MACK CL
MACK RD SERIES

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