# Service bulletin TSB170030\-031520

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: 10110314
- Published by NHTSA: 2017\-08\-04
- Manufacturer's number: TSB170030\-031520
- Manufacturer's date: 2017\-03\-15
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM

## NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of coolant leaks at the coolant thermostat housing or malfunction of coolant thermostat which requires replacement of coolant thermostat. A new coolant thermostat with a more robust o\-ring has been released.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10110314-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10110314-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine, Cooling system

## Vehicles listed

- CUMMINS ISL G

JSON: [/v1/bulletins/10110314](/v1/bulletins/10110314)

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