The safety of a car is important. Even if the GMC Sierra are economic holes, certain routine service acts are crucial. In this article we will explain to you when to replace the brake discs of your GMC Sierra? To do this, first of all, we will discover what the brake discs of your motor vehicle are used for, then, when to replace the brake discs of your GMC Sierra, and, finally, how to change them with new ones.
Interest of the brake discs of a GMC Sierra
We start our content page by detailing what the brake discs of a GMC Sierra are used for, it will enable you to discover why it is necessary to be sure that they are constantly in good functioning order.
Brake discs are the main part of your braking system. In truth, braking on an GMC Sierra is hydraulic, it is a system of hoses and pressurized oil that will come into action when you press your brake pedal. This pressure will actuate a piston that will push the brake pads on your brake disc which is mounted on your wheel. When the brake pads will pinch the discs which will trigger your GMC Sierra to brake.
When to replace the brake discs of a GMC Sierra?
We will now move on to the part that most certainly attracts you to this article, namely, when changing the brake discs of a GMC Sierra? How we revealed it to you just before, the brake discs and pads work in osmosis, however these two components are wearing parts and they will, as time passes and especially the friction when braking wears out and loses braking power. We will now highlight the different techniques to know when to change them:
- We consider that generally speaking the brake discs should be changed every 80, 000 – 100, 000 km on a GMC Sierra , however it is necessary to know that dependent on your driving style and the type of journey this can vary considerably. In fact, if you mainly drive on the motorway and your brakes are only slightly used, this amount can increase, in contrast, if you only drive in built-up areas, it can decrease.
- A basic and powerful way to find out the state of the brake discs on your car is during the technical inspection. In fact this thorough control checks the state of your brakes and the controller will tell you if they are in good state or need to be changed.
- A simple visual way to know when to replace the brake discs on your GMC Sierra is to remove the wheels after the car has been set on stands. Once taken out, you will be able to access your discs and verify their state. If they have any big scratches or deformations you will have to replace them. Otherwise the second indicator to check is to measure the depth of the disk in relation to its edge, if this value exceeds 1 mm you will have to change them by new ones.
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How to replace the brake discs on your GMC Sierra?
Finally, to end this article we will quickly show you how to replace the brake discs of your GMC Sierra. You must know that if you replace the brake discs of your motor vehicle, you will absolutely have to change the brake pads of your GMC Sierra, don’t hesitate to seek advice from our article which explains you how to make this replace.
As far as changing discs is concerned, here are the main steps to follow:
- Put your GMC Sierra on stands, take off the wheels you want to act on.
- Using a large flat screwdriver, pry on your brake pads to compress the caliper piston as much as possible and have enough play to make all your changes.
- Using large Torx bits, take out the two nuts that lock the upper part of your brake caliper, take out it.
- Take out your brake pads, then unlock your brake discs thanks to the two torx screws on the side of the disc, you might need a mallet to remove the discs.
- Replace the discs and tighten them with the new torx screws provided, replace your pads, reassemble the upper part of the caliper and tighten everything tightly.
- Mounting your wheels, and make sure to do a 500-kilometer brake break-in before braking hard.
If you want more guides on the GMC Sierra, go to our GMC Sierra category.
