A new warning light on your dashboard? You don’t figure out why it doesn’t shut off… It’s normal, an automobile is complex and there are multiple reasons why a light may occur. If your glow plug light comes on while driving your Chevrolet Suburban, it may show different problems. In this article, we will do anything we can to support you see things more clearly. First, we will discover how the preheating light on your Chevrolet Suburban functions, and then the different causes it lights up when you are driving

glow-plug-light-chevrolet-suburban

What is the goal of my Chevrolet Suburban 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 ensure that your glow plugs are working properly. In reality, it must light up when you switch on your Chevrolet Suburban to tell you that they are heating the intake air in your cylinders and must go out after a few moments when the engine is running. This preheat light is therefore not supposed to stay or come on while driving with your car. Nevertheless, if it comes on while driving, it may indicate multiple troubles, we will try to summarize the most important ones.

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

A glow light that comes on while driving on your Chevrolet Suburban 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. In any case, a switch to the diagnostic tool will allow you to precisely translate the reason for the light up of your glow light.

My Chevrolet Suburban glow light comes on and I’m encountering a loss of power

The first probability is that you recognize that your glow plug light comes on while driving your Chevrolet Suburban and that you also knowledge a loss of power. In this case, different complications can demonstrate its lightning. Here is a list of the most important reasons:

  • Trouble of EGR valve, indeed, if you undergo a loss of power, it is possible that your EGR valve is clogged, in this case, it is expected that your preheat light comes on while driving on Chevrolet Suburban because it is one of the problem of which it is supposed to warn you. Have the status of your valve examined
  • Problem linked to the turbo overflow valve, in this situation the ECU can no longer manage the turbo intake pressure, which can lead to turbo boost and a disturbance in the performance of the turbo.
  • Problem relevant to the injection, either an injector that has seized up or the injection pump that is malfunctioned by filings or other possible foreign bodies that disturb its proper performing.
  • Finally, the last issue that could lead to a glow indicator light on your Chevrolet Suburban coupled with a loss of power, is that your fuel filter is too dirty, you should feel 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 Suburban

To conclude, we’ll give you the causes for a glow plug light that comes on on your Chevrolet Suburban without you feeling any difference in power or car behaviour. In most cases, 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 fix the issue.
  • You have a false contact somewhere in your electrical circuit, test out the other options first because it is not easy to find it alone, we advise you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • If perhaps you have any additional questions about the Chevrolet Suburban, do not hesitate to consult our Chevrolet Suburban category.