Recent cars are progressively equipped with new technologies, apart from the comfort of use it can bring, technology also has the advantage of saving fuel or reducing the pollution released by our cars. This is precisely the subject matter of our article of the day, we are going to look at the complications of the lambda sensor on GMC Sierra , this sensor also named oxygen sensor plays an necessary function. To find out, first, we are going to identify what a lambda probe is used for, then, what are the lambda sensor complications on GMC Sierra and how to fix them.
What is a lambda role on GMC Sierra?
So we start our article with the benefit of a lambda sensor on GMC Sierra , we will first see what is the purpose of this probe and then how it works.
Role of a lambda sensor on GMC Sierra
First designed by Volvo in the 1970s, it began to show up on our cars in the 1990s with the first EURO 1 emission standards. As well called oxygen sensor on GMC Sierra , its mission is to regulate the amount of oxygen in the exhaust gases, this will enable the engine to adapt the air/fuel mixture to decrease the pollution released by the motor vehicle and lower the car’s fuel consumption.
Lambda sensor procedure on GMC Sierra
Before explaining you the different complications of lambda probe on GMC Sierra , we will look a little more in detail at its operation to allow you to figure out exactly how it works and thus to consider more serenely the correction of a problem associated with it.
As we explained to you, a lambda probe has the job of managing the amount of oxygen present in the exhaust gases . One could naively presume that this data is calculated upstream of the combustion but it is on the contrary measured at the engine outlet . With the EURO 1 standard there was only one lambda sensor needed before the catalyst, but with the arrival of more drastic standards there are now 2 lambda sensors, one before and one after the catalyst . The benefit is to have more precise data by compiling the two probes. These data are sent to the ECU which will adjust the quantity of air and gasoline injected into the engine to improve the combustion .
Lambda sensor issue on GMC Sierra
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Finally, we are now going to attack the part you are obviously most interested in this article, how to handle it if you have a lambda sensor issue on GMC Sierra . In a first step we will see how to identify a lambda sensor HS and in a second step how to change it.
How to know if a lambda sensor on GMC Sierra is HS
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It is necessary to know that a lambda sensor has generally a lifetime of 150 000 km , this data can differ according to the year of your GMC Sierra, your driving, and the good working of your engine. A poorly looked after engine that produces unburned gases may forever alter your lambda sensor. One of the clues that can warn you of a faulty lambda sensor on GMC Sierra may be the engine light turns on, if you want to turn off the engine light of your GMC Sierra, do not hesitate to consult our dedicated article to see the process to follow. The only effective technique to ensure that you have a lambda sensor issue on your GMC Sierra and to pass your car to the diagnostic case, for that do not hesitate to seek advice from our guide which explains you GMC Sierrahow to read the fault code of a GMC Sierra. Please note that if you have complications with one of your lambda sensors, the only solution to resolve them will be to change the faulty sensor.
How to change a lambda sensor on GMC Sierra?
And at last, we are going to focus on the correction of lambda sensor problems on GMC Sierra , by detailing how to replace a lambda sensor.
The replacement of a lambda sensor is quite basic to execute and you will have the ability to do it yourself with a minimal of tools and mechanical expertise. A lambda sensor is worth between 25 and 50€ , it is better to change the 2 lambda sensors present upstream and downstream of your catalytic converter because if one of them is faulty the second one risks to drop you fairly quickly. To replace it, it will be required to put your GMC Sierra on candles and at the level of your catalyst unscrew your probes, disconnect them, reconnect them and screw the new ones . Once re-connected, you should not have any more complications with your lambda sensor on GMC Sierra.
To find more tips on the GMC Sierra, take a look at the GMC Sierra category.
