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Service bulletin 21-NA-210

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10242109
Published by NHTSA2023-09-09
Manufacturer's number21-NA-210
Manufacturer's date2023-08-11
NHTSA componentENGINE AND ENGINE COOLING; EQUIPMENT; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

This service bulletin provides information on observing visible cracks on A/C Evaporator Hose and that it is a normal condition.

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, Equipment and accessories, Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
CHEVROLET BOLT EUV2022, 2023
CHEVROLET BOLT EV2017, 2018, 2019, 2020, 2021, 2022, 2023

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20216312021-10-14. Accessories
20181582018-04-04. Visual System

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
24-NA-1642025-04-15. Service bulletin. This bulletin provides information on Wiper Blade Maintenance Tips.
24-NA-1642025-03-06. Service bulletin. This bulletin provides information on Wiper Blade Maintenance Tips.
21-NA-0432025-02-12. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
21-NA-0432024-12-10. Service bulletin. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
24-NA-1642024-09-25. Service bulletin. This bulletin provides information on Wiper Blade Maintenance Tips.
23-NA-0442024-09-11. Service bulletin. This service bulletin provides information on AGM batteries that require less frequent charging in storage.
PI0754G2024-08-17. Service bulletin. This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic.
12-01-37-001G2024-08-13. Service bulletin. This service bulletin provides information to dealership personnel on a new refrigerant (R1234yf) for A/C service.
16-NA-3422024-08-13. Service bulletin. This service bulletin provides a procedure to check the rearview mirror coax connector for looseness by disconnecting and reconnecting the electrical connector to correct the customers concern for the rearview mirror video screen displaying blue.
17-NA-1572024-07-30. Service bulletin. This service bulletin explains the difference in oil filters for gas engines with new oil pump control systems and the possibilities of what may happen using the incorrect filter.