Vehicle recall 20V588000 · September 24, 2020
Buick Encore GX, Chevrolet Corvette and 4 more models
Sensor connection contamination in the electronic brake boost system may cause an interruption of communication between the sensor and the brake boost system.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- 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.
- Consequence
- 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.
- 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.
Recall details
- NHTSA campaign
- 20V588000
- Reported to NHTSA
- September 24, 2020
- Filed by
- General Motors LLC
- Manufacturer campaign
- A202307260
- Owner notification
- December 9, 2020
- Vehicles potentially affected
- 3,677
- Initiated by
- the manufacturer
- Components
- Service brakes
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Buick Encore GX (2020-2021): 2021, 2020
- Cadillac CT4 (2020): 2020
- Cadillac CT5 (2020): 2020
- Cadillac XT4 (2020): 2020
- Chevrolet Corvette (2020): 2020
- Chevrolet Trailblazer (2021): 2021
Has your Buick been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Buick dealer can also check your VIN. Recall repairs are free.