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Service bulletin SB644003

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 id613541
Published by NHTSA2000-07-21
Manufacturer's numberSB644003
Manufacturer's date2000-04-07
NHTSA componentEQUIPMENT:RECREATIONAL VEHICLE/TRAILER

NHTSA's summary

SERVICE BULLETIN INDICATING THAT THE LEFT- AND RIGHT-HAND SLEEPER SHELF AND SHELF MOUNTING BRACKET ARRANGEMENTS USED ON CERTAIN CHASIS EQUIPPED WITH 56 INCH AND 70 INCH FLAT-TOP AND MID-RISE SLEEPERS HAVE BEEN REDESIGNED. *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

Equipment and accessories

Vehicles listed
MACK CX

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