A new warning light on your dashboard? You don’t find out why it doesn’t shut off… It’s typical, an auto is complex and there are multiple motives why a light could come on. In cases where your glow plug light comes on while driving your Chevrolet Colorado, it may indicate some concerns. In this article, we will do everything we can to support you see things more clearly. First, we will discover how the preheating light on your Chevrolet Colorado works, and then the different reasons it lights up when you are driving

glow-plug-light-chevrolet-colorado

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

The main purpose of the engine glow plug light, which is generally represented by a yellow coil, is to ensure that your glow plugs are working correctly. In fact, it must light up when you switch on your Chevrolet Colorado 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 expected to stay or come on while driving with your car. However, if it comes on while driving, it may indicate multiple failures, we will try to describe the most important ones.

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

A glow light that comes on while driving on your Chevrolet Colorado or at any other time other than when the engine is started is intended to warn you to a problem 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 accurately translate the reason for the light up of your glow light.

My Chevrolet Colorado glow light comes on and I’m experiencing a loss of power

The first possibility is that you identify that your glow plug light comes on while driving your Chevrolet Colorado and that you also experience a loss of power. In this case, some concerns can demonstrate its presence. Here is a list of the most important motives:

  • Trouble of EGR valve, indeed, if you go through a loss of power, it is possible that your EGR valve is blocked, in such a case, it is expected that your preheat light comes on while driving on Chevrolet Colorado because it is one of the failures of which it is expected to alert you. Have the status of your valve inspected
  • Issue linked to the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can lead to turbo boost and a perturbation in the operation of the turbo.
  • Issue related to the injection, either an injector that has seized up or the injection pump that is damaged by filings or other possible foreign bodies that affect its proper performing.
  • Finally, the last issue that could lead to a glow indicator light on your Chevrolet Colorado coupled with a loss of power, is that your fuel filter is too dirty, you should come to 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 Colorado

To conclude, we’ll give you the reasons for a glow plug light that comes on on your Chevrolet Colorado without you feeling any difference in power or car behaviour. Ordinarily, this is an electronic problem:

  • 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 resolve the issue.
  • You have a false contact somewhere in your electrical circuit, test the other solutions first because it is not easy to find it alone, we suggest you to go to your auto mechanic.
  • Faulty injection pressure sensor, ECU error

    • If you need more tutorials on the Chevrolet Colorado, go to our Chevrolet Colorado category.