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Service bulletin A202309280

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 id10213743
Published by NHTSA2022-06-13
Manufacturer's numberA202309280
Manufacturer's date2020-08-05
NHTSA componentEQUIPMENT; FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING

NHTSA's summary

Customer Satisfaction Program. Certain vehicles may have oil leaking from one or more of the plugs on the drive unit assembly. If not addressed, the drive unit could be damaged due to the loss of fluid over time, and the driver may hear abnormal grinding and scraping noises if extreme oil leakage occurs. Dealers are to apply Loctite between the housing and the four plugs and tighten plugs as required.

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, Fuel system

Vehicles listed
CHEVROLET BOLT EV2020

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

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-2022025-10-27. Service bulletin. This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information.
18-NA-1802025-10-16. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
PIE0753I2025-09-30. Service bulletin. This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in the field for further engineering study and analysis.
18-NA-1802025-09-26. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
23-NA-1572025-05-02. Service bulletin. This service bulletin provides repair information to correct a customer concern of a Malfunction Indicator Lamp (MIL) illuminated in Driver Information Center (DIC), a Reduced Propulsion message, and charging limited to 30% State of Charge (SOC).
25-NA-0652025-04-24. Service bulletin. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
PIE0753H2025-03-07. Service bulletin. This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in the field for further engineering study and analysis.
24-NA-0152025-03-06. Service bulletin. This service bulletin provides Hybrid/EV Charging Issue Information and Data Collection Worksheet.
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.
PIE0753G2025-02-08. Service bulletin. This engineering information (EI) will assist GM to recover a small number of electric vehicle battery packs from customer-owned vehicles in the field for further engineering study and analysis.