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Service bulletin 18NA201

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 id10199232
Published by NHTSA2021-07-19
Manufacturer's number18NA201
Manufacturer's date2021-05-05
NHTSA componentENGINE

NHTSA's summary

This technical bulletin provides a procedure to seal the bedplate bolt #621 if found the cause of the oil leak.

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

Vehicles listed
BUICK ENVISION2016, 2017, 2018, 2019
BUICK LACROSSE2018, 2019
BUICK REGAL2016, 2017, 2018, 2019
CADILLAC ATS2016, 2017, 2018, 2019
CADILLAC CT62016, 2017, 2018, 2019
CADILLAC CTS2016, 2017, 2018, 2019
CADILLAC XT52017, 2018, 2019
CADILLAC XTS2016, 2017, 2018, 2019
CHEVROLET CAMARO2016, 2017, 2018, 2019
CHEVROLET EQUINOX2016, 2017, 2018, 2019
CHEVROLET IMPALA2017, 2018, 2019
CHEVROLET MALIBU2016, 2017, 2018, 2019
CHEVROLET TRAVERSE2016, 2017, 2018, 2019
GMC ACADIA2016, 2017, 2018, 2019
GMC CANYON2016, 2017, 2018, 2019
GMC TERRAIN2016, 2017, 2018, 2019

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

Recalls for the same vehicles and component
20194492019-09-06. Engine
19V6420002019-09-06. ENGINE; ELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS

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
00-06-01-026R2025-12-03. Service bulletin. This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
23-NA-1702025-10-25. Service bulletin. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.
23-NA-1532025-10-25. Service bulletin. The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
22-NA-0802025-10-16. Service bulletin. This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder.
15-NA-0102025-07-07. Service bulletin. This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in other states.
21-NA-2402025-06-16. Service bulletin. This service bulletin provides diagnostic repair information to correct an oil leak in the engine.
25-NA-1002025-06-12. Service bulletin. This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and register their vehicle in a California Emission State may be entitled to the 7 year, 70,000-mile Emission Select State Component Limited Warranty.
18-NA-0692025-05-06. Service bulletin. This service bulletin provides a service procedure to correct conditions of Poor Engine Performance in Extremely cold weather conditions, CAC Icing, MIL Illuminated with DTCs set.
23-NA-0742025-05-02. Service bulletin. This service bulletin provides a procedure to add deadener to the batter tray bracket to correct customer concerns of a Service Engine Soon (SES), Reduced Power, Service Brake, Reduced Steering and/or Stabilitrak Message Illuminated on DIC, multiple DTCs.
21-NA-1392025-05-01. Service bulletin. This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.