# Service bulletin 23\-NA\-020

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: 10235807
- Published by NHTSA: 2023\-05\-06
- Manufacturer's number: 23\-NA\-020
- Manufacturer's date: 2023\-04\-27
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

This service bulletin provides a procedure to re\-seal the front engine cover if found the cause of the customer concern of an engine oil leak.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10235807-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10235807-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2023 CHEVROLET CORVETTE

## Other bulletins for the same vehicles and component

- [PIE0815A](/bulletins/11026107.md), 2025-12-04, Service bulletin: ENGINE. This engineering information \(EI\) closure ends the need for gathering further information from technicians/field in regard to the Service Engine Soon \(SES\) Lamp illuminated on DIC, Suspect Non\-OE Catalytic Converters and/or Exhaust Systems w/DTCs P013F, P014A, P014B and/or P013E Set.
- [00\-06\-01\-026R](/bulletins/11026017.md), 2025-12-03, Service bulletin: ENGINE. This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- [23\-NA\-170](/bulletins/11024486.md), 2025-10-25, Service bulletin: ELECTRICAL SYSTEM; ENGINE. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.
- [23\-NA\-153](/bulletins/11024485.md), 2025-10-25, Service bulletin: ENGINE. 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\-080](/bulletins/11024330.md), 2025-10-16, Service bulletin: ENGINE. This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder.
- [15\-NA\-010](/bulletins/11020254.md), 2025-07-07, Service bulletin: ENGINE. 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.
- [25\-NA\-100](/bulletins/11019503.md), 2025-06-12, Service bulletin: ENGINE. 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.
- [23\-NA\-115](/bulletins/11019326.md), 2025-06-06, Service bulletin: ENGINE. This service bulletin provides a procedure to verify the noise and align the camshaft caps to correct customer concerns of a Ticking, Tapping or Snapping Noise from Engine.
- [25\-NA\-052](/bulletins/11017263.md), 2025-04-28, Service bulletin: ENGINE. This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system.
- [24\-NA\-269](/bulletins/11017261.md), 2025-04-28, Service bulletin: ENGINE. This service bulletin informs the technician that there are multiple drain plugs that need to be removed in order to drain all the oil from the engine.

JSON: [/v1/bulletins/10235807](/v1/bulletins/10235807)

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