WenmarOpen by Wenmar Pro

Service bulletin SB-230002

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 id10027204
Published by NHTSA2009-01-10
Manufacturer's numberSB-230002
Manufacturer's date2008-10-03
NHTSA componentSERVICE BRAKES, AIR; VEHICLE SPEED CONTROL:CRUISE CONTROL

NHTSA's summary

MACK TRUCKS: SERVICE BRAKE SWITCH TEST FOR CRUISE CONTROL ACTIVATION. A CHANGE WAS MADE TO THE VEHICLE ELECTRONIC CONTROL UNIT (VECU) SOFTWARE WHICH AFFECTS CRUISE CONTROL. MODELS CXU, CHU, GU, TD, LEU, MRU. *PE

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

Brakes, Throttle and cruise control

Vehicles listed
MACK CHU2006 to 2007
MACK CXU2006 to 2007
MACK GU2006 to 2007
MACK LEU2007
MACK MRU2007

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