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Service bulletin FSB 371-040

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 id10082786
Published by NHTSA2016-10-18
Manufacturer's numberFSB 371-040
Manufacturer's date2014-12-04
NHTSA componentSERVICE BRAKES, AIR:ANTILOCK

NHTSA's summary

ANTI-LOCK BRAKE SYSTEM (ABS) SENSOR CONNECTOR, REPLACEMENT. THE ANTI-LOCK BRAKE SYSTEM (ABS) SENSOR CONNECTOR ON SOME MACK TRUCKS BUILT BETWEEN 01/01/2013 AND 11/07/2014 MAY SHOW SIGNS OF CORROSION. CORROSION OF THE ABS SENSOR CONNECTOR CAN CAUSE ABS SENSOR FAULT CODES AND CAUSE THE ENGINE TO DE-RATE ON TRUCKS EQUIPPED WITH MDRIVE TRANSMISSIONS ONLY.

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, Anti-lock brakes

Vehicles listed
MACK CHU2014 to 2015
MACK CXU2014 to 2015
MACK GU2014 to 2015
MACK LEU2014 to 2015
MACK MRU2014 to 2015
MACK TD2014 to 2015

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