Having a problem with your car is traditional, because regrettably recent vehicles are more and more difficult and therefore exposed to more and more possible breakdowns. Today we’re going to try to help you to solve an injection problem on your GMC Yukon XL . This is a problem that is particularly annoying because it can sooner or later bring your car to non starting or broken engine. To do this, first we will see how injection functions, then, what are the different concerns that can exist on a GMC Yukon XL injectors , and finally, how to solve them.


What is the intent of the injection of a GMC Yukon XL?

So we begin our content page by quickly explaining how an injection system functions so that you have all the information you need to understand the failures associated with it. < br>
The injection system of a GMC Yukon XL manages the fuel intake into the engine , it replaces the old carburettors. It has the benefit to be much more precise and to come, under pressure, to discharge the fuel in the engine. The injection pump takes care of pressurizing the fuel and transferring it to the injectors, and the injectors will release the fuel in the form of micro-drops into the cylinders of your GMC Yukon XL. The benefit of fuel injection is to have a much more precise dosage than a carburettor and to allow a better air/fuel mixture and therefore a better combustion.

What are the different injection problems on GMC Yukon XL?

Now in this second component, we are going to see the different injection problems and their manifestations that you may possibly encounter on your GMC Yukon XL .

Injection pump problems GMC Yukon XL

To start, we will see the injection pump problems on your GMC Yukon XL, there are not many of them, they are often persistent but we will outline them down below:

  • Electronic problem of the high pressure pump: If you have an electronic problem, the pressure in your injection system might be too high or too low which will cause a bad air/fuel mixture and therefore a bad combustion and thus alter the performance of the engine of your GMC Yukon XL.
  • Leakage from the injection pump of your GMC Yukon XL: If you have a major leakage problem, the end result will be much the same as if you have a lack of pressure, you will not have enough pressure and therefore the combustion of your fuel will not be good

Regarding the consequences and manifestations of a fuel pump problem on a GMC Yukon XL , you will obviously feel, a lack of power, your engine grazing, dark smoke emissions…

Injectors problems GMC Yukon XL

Now we move on to the injector problems on GMC Yukon XL . Injectors are the end of your injection system, here are the different problems you may possibly encounter:

  • Dirty GMC Yukon XL injectors: This can happen as a result of poor fuel quality, they will let less fuel through or more if they are entirely clogged. So you will potentially have one or more cylinders that are not functioning effectively.
  • Leaky GMC Yukon XL injector: It’s often at the high pressure seals that an injector can leak, it can also, more rarely, be cracked or broken.
  • Injector GMC Yukon XL HS: This is the circumstance when your injectors are entirely clogged or when you have an electronic problem, it will not let anything go.

Regarding the signs of illness of injector problems on your GMC Yukon XL it is about the same as for a faulty injection pump. You may possibly encounter problems with starting, throttle response, power loss, and smoke emission.

How to fix an injection problem on a GMC Yukon XL?

To conclude our content page on the injection problems on GMC Yukon XL , we will try to give you the solutions that exist to solve these problems.
If after a precise diagnosis it’s your injection pump that is the cause of your problems, it will regrettably be very difficult to intervene on the trouble without replacing the component, this change often goes with the replacement of the injectors, and in some cases the tank, it will take between 2000 and 3000 euros for the whole, try to get some diagnostics and estimates before starting any repair.
Regarding a problem with an injector there are various solutions based on your concerns, here they are:

  • Dirty injector: You can clean the injectors of your GMC Yukon XL, do not hesitate to consult our content page on this subject to get the procedure. If it doesn’t work, you will have to change them.
  • Leaky injector: The replace and the purchase of a joint kit will only cost you a few tens of euros, but you still need to be able to replace it, do not think twice to consult our content page on the injectors that leak on GMC Yukon XL, to have all the solutions available to you.
  • Injector HS: Finally, last solution, your injector is broken or doesn’t work anymore, in general, the replacement of an injector costs around 500 euros labor included.

If you want more tutorials on the GMC Yukon XL, go to our GMC Yukon XL category.