Service bulletin 20NA028
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 | 10205054 |
| Published by NHTSA | 2021-12-20 |
| Manufacturer's number | 20NA028 |
| Manufacturer's date | 2021-08-27 |
| NHTSA component | ENGINE AND ENGINE COOLING:COOLING SYSTEM |
NHTSA's summary
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.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Engine, Cooling system
| BUICK ENCORE GX | 2020, 2021, 2022 |
|---|---|
| CHEVROLET TRAILBLAZER | 2021, 2022 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 21NA257 | 2021-12-27. Service bulletin. This service bulletin provides a service procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3075 Set. |
|---|---|
| 20NA154 | 2020-09-28. Service bulletin. This Technical bulletin provides a procedure to correct a customer concern of a Flutter or Boom Noise around 1100 RPM. |
| 20NA028 | 2020-08-31. Service bulletin. This informational bulletin is to notify dealership personnel as well as providing the customer with the usage instructions from the owner manual, that in extreme cold weather (-18°C or less / 0°F or less), a grille winter cover needs be added during PDI to avoid the customer returning with concerns related to charge air cooler icing. |