# NHTSA recall 20V588000

A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.

- Published by: NHTSA \(United States\)
- Campaign number: 20V588000
- Manufacturer's number: A202307260
- Manufacturer: General Motors LLC
- Reported: 2020\-09\-24
- Owners notified: 2020\-12\-09
- Component: SERVICE BRAKES
- Units potentially affected: 3677
- Part numbers: 84774537, 84784557, 84871303, 84722407, 6000426, 60004350

## What is wrong

General Motors LLC \(GM\) is recalling certain 2020 Chevrolet Corvette and Cadillac CT4, CT5 and XT4, 2021 Chevrolet Trailblazer, and 2020\-2021 Buick Encore GX vehicles.  Sensor connection contamination in the electronic brake boost system may cause an interruption of communication between the sensor and the brake boost system.


## What can happen

If communication with the sensor is interrupted, the electronic brake boost assist could be lost.  Extra pedal force will be required to slow and stop the vehicle, increasing the risk of a crash.


## The remedy

GM will notify owners, and dealers will replace the electronic brake boost module, free of charge.  The recall began December 9, 2020.   Owners may contact Chevrolet customer service at 1\-800\-630\-2438, Cadillac customer service at 1\-800\-333\-4223, or Buick customer service at 1\-800\-521\-7300.  GM's number for this recall is A202307260.


## Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1\-888\-327\-4236 \(TTY 1\-800\-424\-9153\), or go to www.safercar.gov.


## Remedy progress the manufacturer reported

- Report: Annual report 3, for 2024 quarter 4 to 2025 quarter 3
- Filed with NHTSA: 2025\-10\-06
- Vehicles in the campaign: 3677
- Reported remedied: 3584 \(97%\)
- Reported unreachable: 1
- Reported removed: 1

These are the manufacturer's totals for the whole campaign at the end of 2025 quarter 3, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026\-10\-19.

## Vehicles this campaign lists

- [2020 BUICK ENCORE GX](/makes/buick/encore-gx/2020/recalls.md)
- [2021 BUICK ENCORE GX](/makes/buick/encore-gx/2021/recalls.md)
- [2020 CADILLAC CT4](/makes/cadillac/ct4/2020/recalls.md)
- [2020 CADILLAC CT5](/makes/cadillac/ct5/2020/recalls.md)
- [2020 CADILLAC XT4](/makes/cadillac/xt4/2020/recalls.md)
- [2020 CHEVROLET CORVETTE](/makes/chevrolet/corvette/2020/recalls.md)
- [2021 CHEVROLET TRAILBLAZER](/makes/chevrolet/trailblazer/2021/recalls.md)

## Bulletins for the same vehicles and component

A bulletin is the manufacturer's note to its dealers. It is not part of this recall.

- [25\-NA\-065](/bulletins/11017173.md), 2025-04-24, Service bulletin
- [21\-NA\-043](/bulletins/11014230.md), 2025-02-12, Service bulletin
- [17\-NA\-271](/bulletins/11011990.md), 2024-12-19, Service bulletin
- [24\-NA\-072](/bulletins/11011714.md), 2024-12-10, Service bulletin
- [21\-NA\-043](/bulletins/11011709.md), 2024-12-10, Service bulletin
- [24\-NA\-072](/bulletins/11011125.md), 2024-12-04, Service bulletin
- [24\-NA\-072](/bulletins/11010709.md), 2024-11-21, Service bulletin
- [24\-NA\-031](/bulletins/11010574.md), 2024-11-16, Service bulletin
- [22\-NA\-026](/bulletins/11010569.md), 2024-11-15, Service bulletin
- [17\-NA\-239](/bulletins/11010562.md), 2024-11-14, Service bulletin

## Check a VIN

- [NHTSA recall lookup by VIN, United States](https://www.nhtsa.gov/recalls)
- [Transport Canada recall search, Canada](https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng)

JSON: [/v1/recalls/nhtsa/20V588000](/v1/recalls/nhtsa/20V588000)

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