My wife's C8 CorvetteZ51 brakes are Squeaking. Does anyone have thus problem and solution. Thanks Bob

 

Google says… https://static.nhtsa.gov/odi/tsbs/20...80294-9999.pdf

 

Ummmm, Bob, how many miles are on the C8? How long have you had it? Can you tell if it's coming from the front or rear?

Unless this is your first car EVER, lol, when brakes squeak, that's an indicator that they might need to be replaced.
The solution is take the wheel(s) off and inspect the brakes to see if they need to be replaced.

I'm not trying to be a total ***, but if someone ask a question like this, it's car maintenance 101.

 

A lot of brakes will squeak and aren't worn out in the least. What most don't understand is the sound is not coming from the pad against the rotor but from a high frequency vibration of the pad at either the piston or tab areas when the bakes are applied. You'll notice it does it with light brake pressure and not when really stood on.

 

I don’t know about the OP’s C8, but my 2020 C8 only has 7K miles and I expect my brakes to last at least 30K miles. If the OP’s C8 has over 30K miles (unlikely), then the brakes may be worn out and the wear indicator on the pad is rubbing against the disc and making a squealing sound.

What’s probably more likely is the pads need more copper paste (see Post #2 above), or the brakes need to be bedded. Bedding is free and can be performed without going to the dealer, so I’d try that first. Here is a link describing the process -> https://www.autoanything.com/resourc...in-brake-pads/

 

I finally had to replace the pads on my Z51. I tried all of the fixes you read about from other people and they would quite squeaking for awhile but the squeak always returned. Finally installed different pads and the squeaking stopped. You will be able to sell your old pads here on the forum.

 

If you're not tracking the car, I would change the brake pads. I suggest using the Carbotech 1521 pads.

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My 2020 Z51 brakes have never squeaked. I use them a lot, too.

 

^^^
The key with performance brakes is to use them aggressively at least occasionally!

This was my experience with my 2014 Z51. Broke the brakes in as suggested, modest brake pressure. At <1000 miles it was squealing like a stuck pig with light brake pressure. Check out "brake bedding" on google (GM for whatever reason calls in burnishing in the Owner's Manual ONLY for Z51 and ONLY for Tracking.)

But what happens is a very thin film of brake pad material forms on the rotor. It must form but also must be uniform! If spotty due to always using light brake pressure the skip/stick friction resulting causes vibration. That is likely what is causing the squealing.

I used 6 or 7 stops as GM calls for under Tracking (not the 25 they suggest!) That is hard braking (80% of max) and letting them cool for ~1/2 mile between then repeat. The dealer will not do that (safety issue as it is for you, need to find a place street driving when not at a Track!) If they did GM will not reimburse them! GM will pay for pulling the pads, applying brake pad lub to the sides and back. For many that only last a short time then back! You're putting a band-aid on the issue not eliminating the source.

I did it for my 2014 Z51 and no more squeal. AND I do use the brakes aggressively often which keeps that uniform pad material layer.

After 6 months I got feed up with the OEM pad dust. I installed Carbotech 1521 pads that don't require bedding! Never a peep in 3 years. Installed them on my 2017 Grand Sport and now my C8! Never a peep! BUT I do use the brakes aggressively periodically. The pads stop great and low dust. Wash my wheels only when I wash the car.

 

Put some heat in them and they'll stop.