A new light on your dashboard? You don’t find out why it doesn’t switch off… It’s normal, an automobile is elaborate and there are multiple reasons why a light may occur. If your glow plug light comes on while driving your Chevrolet Silverado, it may possibly show several issues. In this post, we will do everything we can to help you see things more clearly. First, we will discover how the preheating light on your Chevrolet Silverado works, and then the different reasons it lights up when you are driving

glow-plug-light-chevrolet-silverado

What is the role of my Chevrolet Silverado glow plug light?

The main role of the engine glow plug light, which is most of the time represented by a yellow coil, is to assure that your glow plugs are working properly. In reality, it must light up when you switch on your Chevrolet Silverado to tell you that they are heating the intake air in your cylinders and must go out after a few minutes when the engine is running. This preheat light is therefore not meant to stay or come on while driving with your automobile. Nevertheless, if it turns on while driving, it may show different troubles, we will try to describe the main ones.

What to do if the glow plug light comes on while driving on my Chevrolet Silverado?

A glow light that comes on while driving on your Chevrolet Silverado or at any other time other than when the engine is started is intended to inform you to a fault other than your spark plugs, we will take a look at this right now. No matter the reason, plug in your car to the diagnostic tool will allow you to properly translate the explanation for the light up of your glow light.

My Chevrolet Silverado glow light comes on and I’m going through a loss of power

The first probability is that you recognize that your glow plug light comes on while driving your Chevrolet Silverado and that you also encounter a loss of power. In this instance, several problems can describe its lightning. Here is a list of the main reasons:

  • Problem of EGR valve, in fact, if you go through a loss of power, it is possible that your EGR valve is clogged, in such a case, it is rational that your preheat light comes on while driving on Chevrolet Silverado because it is one of the failures of which it is supposed to warn you. Have the status of your valve inspected
  • Trouble linked to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can cause turbo boost and a disturbance in the performance of the turbo.
  • Trouble linked to the injection, either an injector that has seized up or the injection pump that is destroyed by filings or other possible foreign bodies that affect its proper performing.
  • Finally, the last problem that could lead to a glow indicator light on your Chevrolet Silverado coupled with a loss of power, is that your fuel filter is too dirty, you should get jerks because of a bad fuel flow in the engine.

My glow plug light comes on or is flashing but no difference on the performance of my Chevrolet Silverado

Finally, we’ll give you the reasons for a glow plug light that comes on on your Chevrolet Silverado without you feeling any difference in power or automobile behaviour. Ordinarily, this is an electronic fault:

  • Glow plug relays or fuses to be replaced, test and change if necessary.
  • A contactor/potentiometer on one of your pedals (brake, accelerator or clutch) has failed, often a simple de-seizure will be enough to solve the problem.
  • You have a false contact somewhere in your electrical circuit, check the other solutions first because it is not easy to find it alone, we suggest you to go to your auto technician.
  • Faulty injection pressure sensor, ECU error
  • If you have any additional questions about the Chevrolet Silverado, do not hesitate to consult our Chevrolet Silverado category.