# Service bulletin 20NA154

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: 10180314
- Published by NHTSA: 2020\-09\-28
- Manufacturer's number: 20NA154
- Manufacturer's date: 2020\-08\-03
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY

## NHTSA's summary

This Technical bulletin provides a procedure to correct a customer concern of a Flutter or Boom Noise around 1100 RPM.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10180314-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10180314-9999.pdf)

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

## Components

Engine, Cooling system, Radiator

## Vehicles listed

- 2020 BUICK ENCORE GX

## Other bulletins for the same vehicles and component

- [21NA257](/bulletins/10205577.md), 2021-12-27, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This service bulletin provides a service procedure to correct a customer concern of a Malfunction Indicator Lamp \(MIL\) Illuminated \- DTC P3075 Set.
- [20NA028](/bulletins/10205054.md), 2021-12-20, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. This service bulletin is to inform dealers that in extreme cold weather, a grille winter cover needs be added during PDI to avoid the customer returning with concerns related to charge air cooler icing.

JSON: [/v1/bulletins/10180314](/v1/bulletins/10180314)

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