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Service bulletin 603

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 id10018304
Published by NHTSA2005-12-21
Manufacturer's number603
Manufacturer's date2005-11-29
NHTSA componentSTRUCTURE:FRAME AND MEMBERS

NHTSA's summary

MISSING SUSPENSION CROSSMEMBER MOUNTING FASTENERS AND MOUNTING HOLES IN FRAME- (CT AND CTP MODELS)CHASSIS EQUIPPED WIT HENDRICKSON HAULMAAX (R) SUSPENSION AND 11.1 FRAME RAILS ON MACK TRUCKS. *AK

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
UNKNOWN UNKNOWN

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