Addressing Brake Noise Requires Regular Maintenance
Some 2020–2025 Corvettes may have an excessive squeal or squeak sound from the front brakes.
The sound normally only occurs on initial brake applications after the vehicle has sat for an extended period of time.
The condition also may occur under light braking at speeds under 10 mph (16 km/h).
After applying the brake 1–6 times, or after braking at higher speeds, the sound will no longer be heard. The sound also may occur more frequently in high humidity conditions.
To help reduce brake noise, the brake pads are treated with an anti-squeal copper paste on the abutment areas of the pad backing plates.
The paste will dissipate over time and may need to be reapplied periodically as part of normal vehicle maintenance.
TIP:
This is a customer-paid maintenance item and is not covered as a warranty repair under the New Vehicle Warranty, as described in the Corvette Owner’s Manual.
If brake squeal is excessive, the anti-squeal paste should be reapplied. The anti-squeal paste should always be reapplied when the brake pads are removed or replaced.
The use of wheel cleaners or power washers pointed directly at the brake calipers may remove the copper paste from the brake pads. It may be necessary to apply the anti-squeal paste again if the lubricant is washed away.
TIP: The high-performance brake system will have a tendency to make some noise when used in a street setting. In low-speed driving, the brakes may not have the chance to get up to “operating temperature,” so some noise is to be expected.
This does not mean that there is a concern with the brakes on the vehicle.
Before applying the paste, remove the brake pads from the calipers and clean both ends of the abutment areas on the pads and calipers.
Apply a coat of copper paste to completely cover the pad backing plate abutments on each end. The paste should not extend onto the friction material.
When replacing the brake pads, always use Brembo GM OEM pads. Aftermarket pads may result in a change in the braking performance.
For more details, including part numbers, refer to Bulletin #24-NA-221.
