# Service bulletin P\-1662

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: 10027205
- Published by NHTSA: 2009\-01\-10
- Manufacturer's number: P\-1662
- Manufacturer's date: 2009\-06\-30
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:DIESEL

## NHTSA's summary

MACK TRUCK: MODELS CXU, CHU, GU, MRU AND LEU CHASSIS. US07 MP7 ENGINE MANAGEMENT SYSTEM \(EMS\) SOFTWARE UPGRADE. THE REVISION INCLUDES A REDUCTION I N PEAK INJECTION PRESSURES TO IMPROVE LONGEVITY OF UNIT INJECTOR COMPONENTS. \*PE UPDATED 9/28/09. \*PE UPDATED 2/12/10. \*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

Engine

## Vehicles listed

- 2006 to 2008 MACK CHU
- 2006 to 2008 MACK CXU
- 2006 to 2008 MACK GU
- 2007 to 2008 MACK LEU
- 2007 to 2008 MACK MRU

JSON: [/v1/bulletins/10027205](/v1/bulletins/10027205)

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