Chevy Check Engine Light Flashing Then Stops | How to Resolve the Issue?

In your Chevrolet, the seriousness of the issue may be determined by the light that is blinking on your engine. The manner in which it flashes may provide insight into the severity of the problem.

If the light illuminates continuously, then you may assume that it is only a straightforward issue, and there is no pressing need for a solution right now. However, if the light is flashing, you are required to pull over immediately and have your vehicle towed to the nearest repair as quickly as feasible.

The majority of the time, an engine misfire is the cause of a flashing light.

You are fortunate to have access to this article, which will assist you in gaining a better understanding of “Chevy Check Engine Light Flashing Then Stops”

Different Engine Light Illuminations and What Do They Indicate

The check engine light is an indicator that there is a problem with the vehicle’s engine. You are able to determine the degree of seriousness based on the way the light gets illuminated.

There are three primary causes that are responsible for the check engine light coming on in Chevrolet.

When the check engine light is merely on and not flashing, it indicates that there is no severe problem with your vehicle and that getting it serviced should not be difficult and should not break the bank if you ever decide to do so.

The second issue is known as “intermittent illumination.” This is referred to as “soft failure” when the check engine light flashes for a short period of time and then abruptly ceases to do so or turns off by itself without the driver taking any action.

Nevertheless, even if it is just modest, it is still related to a number of other disorders. For example, it keeps disconnecting itself and then connecting again, until finally the cable is severed. In addition, there is a significant chance that the check engine light may flash both on and off.

The third indicator is a steady blinking light; if the warning light for the engine keeps blinking steadily, this may indicate that there is a serious problem. This indicates that you need to immediately pull over and have the car towed in order to get it to a qualified technician as soon as possible.

What is an Engine Misfire?

The standard internal combustion engine of a car has to have a series of cylinders in which the air and fuel are mixed and ignited in order to create the power necessary for the vehicle to be moved. You need to bear in mind that if a car was unable to burn gasoline, the ratio of air to fuel would no longer be correct, and other similar things would happen.

In other words, the check engine light would begin its flashing activity if one or more of the cylinders had a problem and were unable to function as they should have been.

If you are going to be wondering about Chevy Check Engine Light Flashing Then Stops, then usually it is because your engine is having a misfire.

Diagnose The Misfire Issue

There is a possibility of a misfire, which is indicated by the check engine light flashing. Misfires are caused by a variety of factors, the most frequent of which include carbon tracks, clogged spark plugs, weak fuel injectors, vacuum leaks, worn valve seals, and a lack of voltage at the coil.

If you notice that the indicator light is blinking, you should take the vehicle to the technician so that he may fix it. However, it calls for a significant expense.

If spark blockage is the issue, then you can quickly address the problem on your own, in contrast to other potential causes of the misfire. A typical cause of misfiring is a spark plug that has become clogged. People often forget to change them, which causes them to age prematurely. After that, it begins to cause complications.

The misfire reasons may be readily solved by using the following diagnostic steps and the most typical solutions.

Step 1

It is necessary that we discover the reason why the light is turned on. Therefore, you will need to use a code reader to decipher the codes. You might also do it at car parts stores since some of them provide free decoding services.

After you have decoded the code, you will be able to diagnose the problem with your vehicle. The code reader displays error codes for any misfires that have occurred. In addition to that, it provides detailed descriptions along with cylinder numbers. For example, the misfire is coming from the second cylinder.

After you have identified the issue with the misfire, you will need to proceed to the next stage.

Step 2

The removal of the spark clog is the second step to take. Before moving on to the next phase, there are a few things you need to double verify. Do these threads have oil on them, the shaft above them, or do they stay dry?

The issue with the spark plug was caused by oil leakage, which in turn resulted in blue smoke or misfires. If they dry, the electrode on the car’s spark plug has to be checked. If this is the case, you will need to get new spark plugs to replace the old ones.

Step 3

There is a possibility that the “check engine” light will not turn off by itself. You are going to need to reset it. After making repairs to the vehicle, you are required to clear the engine code before starting the vehicle. In order for you to determine whether or not the fix was successful. You may use a code reader. Alternatively, you may raise the hood of the vehicle and detach the negative terminal from the battery for at least ten minutes and preferably longer. This will cause the computer to restart and will turn off the light.

Reasons For Engine Misfire

Because it is the oxygen sensor’s job to check the amount of oxygen in the exhaust, a malfunction in the oxygen sensor is the most likely explanation for the problem. The knowledge of the amount of oxygen present in the exhaust is put to use in order to calculate the required amount of air or fuel in the cylinder.

Imagine, for instance, that there is an issue with this sensor; in that case, the engine would most likely have an excess of air or fuel compared to what is required. Now, if the air or fuel combination had more fuel than was necessary, the igniter would not be able to burn this fuel, and part of it would either wind up leaking out of the exhaust or causing other major issues.

A flawed gasoline cap is the second factor in this issue. The fact that your engine light will come on if the gasoline cap on your vehicle is not properly closed while it is not in use is a rather severe matter.

It’s possible that some of the owners may see this as a minor issue with an open cap; nonetheless, the gasoline cap may be damaged and will need to be replaced. Problems with the fuel cap, which might be characterized as engine misfire issues, are simple and inexpensive to repair. In this situation, you should make sure the gasoline cap is well closed.

If the check engine light continues to flash after the gasoline cap has been closed, the situation is even more problematic. In a predicament like this, you have no choice except to pull over.

How To Prevent Engine Misfire?

You need to adhere to the planned maintenance program for your vehicle in order to protect the critical internal components from being severely damaged in the case of a misfire. Always keep an eye out for the different check engine light signal kinds and take quick action. This may avoid troubles with the misfire in an automobile engine.

Ensure that all of the components of the vehicle are up to date and then sit back and relax.


This article has answered all of your questions about the check engine light issue in Chevrolet. Just a gentle reminder, you should always assume that a flashing check engine light indicates that there is a problem with the engine of your car.

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