# Service bulletin 18209

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: 10143742
- Published by NHTSA: 2018\-08\-20
- Manufacturer's number: 18209
- Manufacturer's date: 2018\-06\-19
- NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; ENGINE

## NHTSA's summary

18209 \- Service Update. Certain vehicles equipped with a 1.6L diesel engine \(RPO LH7\), may have been built with an improper alignment of the clamp/gasket assembly connecting the turbocharger to the catalytic converter. This condition may cause a diesel exhaust leak and/or smoke from the underhood area of the vehicle. In addition, a check engine indicator may set with diagnostic trouble code P0421. Dealers are to inspect and replace the turbocharger to catalytic converter clamp/gasket as necessary.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10143742-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10143742-0001.pdf)

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

## Components

Engine, Exhaust and emissions, Catalytic converter, Turbocharger or supercharger

## Trouble codes named

P0421

## Vehicles listed

- 2018 CHEVROLET EQUINOX
- 2018 GMC TERRAIN

## Other bulletins for the same vehicles and component

- [PIP5812C](/bulletins/10231622.md), 2023-02-13, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This Preliminary information communicates the possibility of dtc p0299 p0234 setting due to oil/moisture cndensate freezing in Turbocharger Wastegate Regulator Solenoid Valve \(TCV\) during cold weather driving
- [PIP5812B](/bulletins/10202407.md), 2021-10-25, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This Preliminary information communicates the possibility of dtc p0299 p0234 setting due to oil/moisture cndensate freezing in Turbocharger Wastegate Regulator Solenoid Valve \(TCV\) during cold weather driving
- [17\-NA\-334](/bulletins/10190317.md), 2021-04-15, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. Information on Diesel Engine Soot Deposits at the Variable Turbine Geometry \(VGT\) Pin Condition Some customers may comment that combustion deposits or soot \(1\) can be seen coming from the Turbo Actuator Pin/Arm \(2\). Information This is normal operation and will not affect the function of the Turbocharger. There is a small gap between the seal and the shaft to allow for proper rotation. Do Not replace the Turbocharger.
- [PI0653E](/bulletins/10139284.md), 2018-06-04, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This preliminary informational bulletin provides information on Damaged, Disassembled or Improperly Packaged Turbochargers Returned to Warranty Part Center.
- [060601010D](/bulletins/10139279.md), 2018-06-04, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. This informational bulletin explains how the catalytic converters may need an inspection, cleaning or replacement if debris have entered the exhaust system.
- [17NA334](/bulletins/10134615.md), 2018-04-23, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This informational bulletin explains a normal condition caused by exhaust soot blowing by the VGT pivot seal.

JSON: [/v1/bulletins/10143742](/v1/bulletins/10143742)

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