# Service bulletin FSB\-255\-023

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.

- Type: Service bulletin
- NHTSA id: 10044247
- Published by NHTSA: 2012\-05\-24
- Manufacturer's number: FSB\-255\-023
- Manufacturer's date: 2012\-04\-01
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE

## NHTSA's summary

MACK TRUCKS: SEVERE FRETTING DAMAGE OF THE ENGINE VARIABLE GEOMETRY TURBOCHARGER ACTUATOR \(ENGINE VGT ACTUATOR\) HARNESS AND TURBINE SHAFT SPEED SENSOR \(TSS\) CONNECTORS MAY CAUSE AN UNRELIABLE SIGNAL TO THE ENGINE VGT ACTUATOR. ALSO INCLUDED MODEL CMM AND CMH. NO MODEL YEARS GIVEN. \*JS

## 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

Engine

## Vehicles listed

- 2006 to 2010 MACK CHU
- 2006 to 2010 MACK CXU
- 2012 to 2013 MACK GRANITE \(GU\)
- 2006 to 2011 MACK GU
- 2007 to 2012 MACK LEU
- 2007 to 2012 MACK MRU
- 2011 to 2012 MACK PINNACLE \(CHU\)
- 2011 to 2012 MACK PINNACLE \(CXU\)
- 2012 MACK TD

JSON: [/v1/bulletins/10044247](/v1/bulletins/10044247)

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