FAQs— GMC Brake Disc and Pad Kit
- After installing a new GMC brake disc and pad kit, will I immediately notice improvement in my ride’s braking power?
No, you won’t. In fact, the first few applications of your new brakes will yield very little added braking power. For you to build up some grip, you first need to gently apply the brakes for several times at low speed before you drive down the road at normal to high speed. The process of building your grip is called bedding in, and it is done to allow your newly installed brakes to work as well as they are designed to. Bedding in is recommended for those who have installed a new brake kit or new pads and rotors, as well as for those who have purchased a new car.
- Every time I drive my GMC down the mountain pass during our weekend getaways, I notice that my brakes get hot but I just ignore it and continue to drive. What can I do next time to prevent this from happening?
The usual remedy for such is to pull over and wait for a few minutes until your brakes cool down. As the components of your brakes cool down, they regain their ability to take in heat. So as you drive again, the brakes will seem to work just fine.
- After completing the required break-in cycle for my new GMC brakes, I noticed a light blue tint on the face of the rotor. Is that normal?
That is but normal, and that’s actually what you should look for on each face of your rotor after the break-in cycle. The slight blue tint indicates that your new brake disc or rotor has reached the necessary break-in temperature.
- I also noticed a sort of light gray film on the rotor surface. What does that mean? Is that something I should worry about?
It’s a good thing if you notice a light gray film on the face of each rotor because that means your new brakes have already reached their full potential. That gray film is actually a brake pad material that’s being transferred onto the rotor surface. If the layer of pad material deposited on the rotor’s face is even, you should give yourself a pat on the back for doing the break-in properly.
- My GMC brake rotors are now slightly warped. I read online that the rotors can be turned so as not to compromise the braking performance. What does “turning” the rotors mean?
“Turning” the brake rotors means “resurfacing” or “machining” them to get rid of uneven wear and warping, thus giving the rotors a smooth braking surface. When turning the rotors, they are usually placed on a lathe, where a small amount of the disc surface is shaved off to make their face smooth again.
- When should I have my GMC brake rotors turned?
It would be wise if you can have the rotors or brake disc of your GMC turned at every brake service or every time you replace your brake pads. By doing so, you are giving your new brake pads a smooth braking surface, therefore helping ensure better pad wear. This will also give you improved braking performance without the need to shell out bucks for new rotors. However, turning the rotors frequently shortens their lifespan. Thinning of the rotors could also mean losing some of their heat dissipation ability, and thus making them prone to brake fade.
- My GMC brakes produce squeaking sound every time I step on the brake pedal. Does this mean I will need a new GMC brake disc and pad kit soon?
Such brake noise is a sign of a brake problem, but you need to do some troubleshooting first before you decide to purchase a new brake kit. This squeaking sound can be caused by the pads that have hardened or glazed due to humidity. The friction surface of “glazed” pads generates noise as it comes in contact with the brake disc. That unusual sound when braking can also be the first sign of a weak link in the brake system, which, when left ignored, can lead to brake failure. If your GMC brakes consistently produce such sound when the brake pedal is stepped on, have your brakes checked and serviced as soon as possible.