# Service bulletin PB\_663

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: 10247185
- Published by NHTSA: 2023\-12\-14
- Manufacturer's number: PB\_663
- Manufacturer's date: 2023\-11\-06
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

As a product improvement, Pierce will be changing coolant probes from a contact probe to a capacitive sensor.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10247185-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10247185-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 1999 to 2006 PIERCE CUSTOM CHASSIS
- 1999 to 2011 PIERCE CUSTOM CONTENDER

JSON: [/v1/bulletins/10247185](/v1/bulletins/10247185)

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