Imagine yourself driving peacefully aboard your GMC Terrain and all of a sudden an engine warning light shows up on your dashboard ! The typically seen kind of reaction is worries of risking a critical issue. To know what exactly this light corresponds to, you will have to learn how to read an GMC Terrain fault codes, you may have previously read about OBD system, this is exactly what we are going to speak about. Our writers have chosen to write this content to enable you quickly find the origin of this default code and to give you reassurance. To perform this, we will first take a look at the nature of a fault code on GMC Terrain, then how to read an GMC Terrain fault code, and finally how to erase this fault code to be able to turn off the light on your dashboard.


What is a GMC Terrain fault code?

A fault code is a universal or standard code common to all manufacturers , they are also identified as DTC (Data Trouble Code), the objective is to guarantee that any diagnostic OBD can translate them. They will be represented by a standard format, like for example: P0255. Each data will have a special explanation. Default codes are codes issued by the calculators of your GMC Terrain. These ECUs will constantly monitor your vehicle’s exhausts, pressures, mixtures and when the values exceed the limits set by the vehicle’s ECU, the fault code will emerge. The benefit of understanding how to read a fault code on your GMC Terrain is that you will have access to specific info about your automobile which will let you to find out what issue you are facing.

How to read a fault code on my GMC Terrain?

In this second part we will now focus specifically on what brings you on this website, how to read a fault code on GMC Terrain. To discover this useful data you will need to to purchase a diagnostic tool, also referred to as OBD 2, named after the socket on your GMC Terrain to which you will have to connect. These diagnostic tools are easily available in the market, you will be able to find some in Bluetooth version which connects to your phone and some standard versions with a reader associated to the socket, as far as price is concerned, you will be able to find models between 30 and 100 euros. Once you have purchased an OBD2 diagnostic reader, you will have to find the diagnostic plug on your GMC Terrain, it is established on the left side of your steering column on the lower part of your dashboard, behind a hatch. It is easy to locate because it is triangular shaped and has 16 pins. All you have to do is connect with your diagnostic tool to read the fault code of your GMC Terrain.

How to erase the fault code GMC Terrain

Finally, to finish this document, we are going to explain you the methode to accomplish to erase a fault code on your GMC Terrain. Once you have navigated through the menus, you will access the list of active fault codes on your car. But, you will have to ask yourself an important question, is it really useful to erase this fault code on GMC Terrain? In fact, erasing a fault code without dealing with the issue corresponds to burying its head in the sand. Moreover, the computer of your GMC Terrain is made to take resolutions depending to the data it records, if a very important fault code is present, it will possibly adjust the engine overall performance to protect it. So if you delete the fault code, remember to fix the problem to which it is associated. Some OBD diagnostic tools do not allow you to do this. You have a dedicated navigation menu on most diagnostic tools that should allow you to clear this fault code on GMC Terrain.

If you wish more guides on the GMC Terrain, go to our GMC Terrain category.