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Service bulletin 121026

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 id629406
Published by NHTSA2002-04-02
Manufacturer's number121026
Manufacturer's date2002-02-15
Replaces121026
NHTSA componentSUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY:HANGER,BRACKET

NHTSA's summary

CONCERNS WITH FRAME RAIL CRACKS IN AREA OF REAR SPRING FRONT HANGER BRACKET.*JB

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

Suspension

Vehicles listed
MACK CH
MACK CX

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