# Service bulletin 18189

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: 10143735
- Published by NHTSA: 2018\-08\-20
- Manufacturer's number: 18189
- Manufacturer's date: 2018\-06\-07
- NHTSA component: LANE DEPARTURE: BLIND SPOT DETECTION

## NHTSA's summary

18189 \- Customer Satisfaction Program. Certain 2018 model year Chevrolet Express and GMC Savana vehicles, may have a condition in which the chassis harness is misrouted between the body and the frame. Systems such as the side blind zone alert or park assist system may become inoperable if the wires were to become damaged. If this damage were to occur, the driver would be notified via a Driver Information Center \(DIC\) message stating ?Service Side Detection? or ?Service Park Assist?. Reroute the chassis harness to inside of the frame.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10143735-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10143735-0001.pdf)

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

## Components

Driver assistance, Blind spot detection

## Vehicles listed

- 2018 CHEVROLET EXPRESS
- 2018 GMC SAVANA

## Other bulletins for the same vehicles and component

- [PIT5698B](/bulletins/10201251.md), 2021-09-13, Service bulletin: ELECTRICAL SYSTEM:ADAS:BLINDSPOT:SENSORS. This Preliminary information communicates additional information on how a LIN bus operates and diagnostic tips when working on a LIN bus.

JSON: [/v1/bulletins/10143735](/v1/bulletins/10143735)

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