# Service bulletin PI\-0837

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: 10055173
- Published by NHTSA: 2014\-04\-18
- Manufacturer's number: PI\-0837
- Manufacturer's date: 2014\-02\-01
- NHTSA component: ENGINE; ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

MACK TRUCKS: INFORMATION AVAILABLE REGARDING THE ENHANCEMENTS FOR ENGINE CONTROL MODULE \(ECM\) SOFTWARE UPDATES TO ADDRESS COLD START TIME DELAY, IMPROVED SOOT LEVEL AND PISTON COOLING JET \(PCJ\) DIAGNOSTIC FAULT. MODEL 2013 CHU, CXU, GU, LEU, MRU, TD. \*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

Electrical system, Engine, Software

## Vehicles listed

- 2013 MACK CHU
- 2013 MACK GRANITE \(GU\)
- 2013 MACK LEU
- 2013 MACK MRU
- 2013 MACK PINNACLE \(CXU\)

JSON: [/v1/bulletins/10055173](/v1/bulletins/10055173)

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