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Service bulletin K28501552

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 id10154335
Published by NHTSA2019-03-11
Manufacturer's numberK28501552
Manufacturer's date2019-02-12
NHTSA componentEQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

NHTSA's summary

Mack Chassis - Models GU / GR - Constant Correction To Center

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Equipment and accessories, Labels and manuals

Vehicles listed
MACK CHU
MACK GU

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