# Service bulletin 24\-NA\-221

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11010643
- Published by NHTSA: 2024\-11\-19
- Manufacturer's number: 24\-NA\-221
- Manufacturer's date: 2024\-10\-08
- NHTSA component: SERVICE BRAKES

## NHTSA's summary

This service bulletin provides service procedure information on Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11010643-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11010643-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Brakes

## Vehicles listed

- 2025 CHEVROLET CORVETTE

## Other bulletins for the same vehicles and component

- [24\-NA\-221](/bulletins/11025975.md), 2025-12-02, Service bulletin: SERVICE BRAKES. This service bulletin provides service procedure information on Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies.
- [N252494220](/bulletins/11019781.md), 2025-06-26, Service campaign: SERVICE BRAKES. Service Update. Certain vehicles listed above may have a condition in which braking performance is reduced, vehicle top speed is limited, and MIL notification is provided to the customer. Dealers are to replace the brake master cylinder assembly.
- [25\-NA\-065](/bulletins/11017173.md), 2025-04-24, Service bulletin: STEERING; SERVICE BRAKES; FUEL/PROPULSION SYSTEM. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
- [24\-NA\-048](/bulletins/11014277.md), 2025-02-17, Service bulletin: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING; SERVICE BRAKES. This service bulletin provides customer information for rear unwanted automatic braking, usually when reversing out of a garage or driveway.
- [21\-NA\-043](/bulletins/11014230.md), 2025-02-12, Service bulletin: VISIBILITY/WIPER; SERVICE BRAKES; ENGINE; ELECTRICAL SYSTEM; WHEELS. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold \(prepping\) to the customer.
- [17\-NA\-271](/bulletins/11011990.md), 2024-12-19, Service bulletin: WHEELS; SERVICE BRAKES. This service bulletin provides a procedure to clean the back side of the rims and rotors and to correct the customer concern of wheel clicking.
- [21\-NA\-043](/bulletins/11011709.md), 2024-12-10, Service bulletin: STRUCTURE:BODY; WHEELS; ENGINE; SERVICE BRAKES; UNKNOWN OR OTHER. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold \(prepping\) to the customer.
- [24\-NA\-031](/bulletins/11010574.md), 2024-11-16, Service bulletin: SERVICE BRAKES. This service bulletin provides information for having brake pulsation and/or repeat brake pulsation.
- [22\-NA\-026](/bulletins/11010569.md), 2024-11-15, Service bulletin: SERVICE BRAKES. This service bulletin provides information for dealers/technicians on Brake Pulsation, Noise and/or Visible Pitting Condition to Brake Rotor Surface.
- [17\-NA\-239](/bulletins/11010562.md), 2024-11-14, Service bulletin: SERVICE BRAKES. This bulletin provides information on possible normal brake drag caused by the vehicle parked for an extended period of time.

JSON: [/v1/bulletins/11010643](/v1/bulletins/11010643)

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