# Service bulletin 18085

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: 10139292
- Published by NHTSA: 2018\-06\-04
- Manufacturer's number: 18085
- Manufacturer's date: 2018\-03\-13
- NHTSA component: ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\); ELECTRICAL SYSTEM

## NHTSA's summary

18085 \- Service Update. Terminal seal was not fully seated into the cavity of the crankshaft position sensor connector. Inspect and replace crankshaft position sensor and connector as needed.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10139292-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10139292-0001.pdf)

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

## Components

Electrical system, Engine, Exhaust and emissions, Crankcase ventilation \(PCV\)

## Vehicles listed

- 2018 CHEVROLET VOLT

## Other bulletins for the same vehicles and component

- [19NA080](/bulletins/10160421.md), 2019-05-28, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\). This informational bulletin provides information to the tech to discard the PCV drain tube when working on the lower area of the engine.
- [PIP5603](/bulletins/10149049.md), 2018-11-26, Service bulletin: ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\). This Preliminary information communicates the possibility of the PCV orifice in the valve cover being plugged and causing the check engine lamp to illuminate and set dtc P00C7 and P0106.

JSON: [/v1/bulletins/10139292](/v1/bulletins/10139292)

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