A new light on your dashboard? You don’t find out why it doesn’t switch off… It’s typical, an automobile is complicated and there are many factors why a light could come on. If your glow plug light comes on while driving your GMC Canyon, it might indicate some problems. In this post, we will do everything we can to support you see things more clearly. First, we will see how the preheating light on your GMC Canyon operates, and then the different motives it lights up when you are driving

glow-plug-light-gmc-canyon

What is the role of my GMC Canyon glow plug light?

The main purpose of the engine glow plug light, which is in most cases symbolized by a yellow coil, is to ensure that your glow plugs are working properly. In fact, it must light up when you switch on your GMC Canyon 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 expected to stay or come on while driving with your vehicle. But, if it turns on while driving, it may suggest different issues, we will try to detail the main ones.

What to do if the glow plug light comes on while driving on my GMC Canyon?

A glow light that comes on while driving on your GMC Canyon or at any other time other than when the engine is started is intended to notify you to a problem other than your spark plugs, we will take a look at this right now. Whatever the case, plug in your car to the diagnostic tool will allow you to accurately interpret the explanation for the light up of your glow light.

My GMC Canyon 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 GMC Canyon and that you also encounter a loss of power. In such a case, some concerns can describe its lightning. Here is a list of the main factors:

  • Problem of EGR valve, indeed, if you suffer a loss of power, it is possible that your EGR valve is blocked, in such a case, it is obvious that your preheat light comes on while driving on GMC Canyon because it is one of the issue of which it is intended to warn you. Have the status of your valve examined
  • Issue associated with the turbo overflow valve, in this situation the ECU can no longer control the turbo intake pressure, which can result in turbo boost and a disturbance in the operation of the turbo.
  • Issue 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 affect its proper performance.
  • Finally, the last problem that could lead to a glow indicator light on your GMC Canyon 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 GMC Canyon

To conclude, we’ll give you the motives for a glow plug light that comes on on your GMC Canyon without you feeling any difference in power or vehicle behaviour. In most cases, this is an electronic problem:

  • Glow plug relays or fuses to be changed, test and replace 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, test the other options first because it is not easy to find it alone, we encourage you to go to your technician.
  • Faulty injection pressure sensor, ECU error
  • To discover more tips on the GMC Canyon, take a look at the GMC Canyon category.