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Service bulletin PI 0859A

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 id10083622
Published by NHTSA2016-10-27
Manufacturer's numberPI 0859A
Manufacturer's date2016-01-13
NHTSA componentELECTRICAL SYSTEM; VEHICLE SPEED CONTROL

NHTSA's summary

FRONT RADAR, FAILURE. CERTAIN MACK CHU, CXU, AND GU TRUCKS BUILT BETWEEN 11/11/2013 AND 01/14/2015, EQUIPPED WITH FRONT RADAR MAY EXPERIENCE LOSS OF FRONT OBJECT DETECTION OR ERRATIC OPERATION OF CRUISE CONTROL FUNCTIONS. THE TERMINAL SEALS OF THE HARNESS IS ALLOWING MOISTURE AND CORROSION TO BUILD UP IN THE FRONT RADAR HARNESS. TO ENSURE PROPER OPERATION OF THE FRONT RADAR, THE HARNESS IS INSPECTED FOR THE PROPER SEAL AND/OR CORROSION.

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

Electrical system, Throttle and cruise control

Vehicles listed
MACK CHU2014 to 2016
MACK CXU2014 to 2016
MACK GU2014 to 2016

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