- A potential problem in the manufacturing of sensors used in GM’s brake-by-wire system means the C8 Corvette, as well as some 2021 Chevrolet Trailblazer, 2020 and 2021 Buick Encore, and 2020 Cadillac (CT4, CT5, and XT4) vehicles, are being recalled.
- In systems with the flawed sensors, correct information may not reach the braking system, which could result in the brakes not working the way they’re supposed to.
- GM dealers will fix the brakes for free by replacing the electronic brake-boost module. Owners can see if their vehicle is affected by visiting the MyGM website.
The brake-by-wire system in the 2020 Chevrolet Corvette isn’t quite up to snuff, according to a recall and stop-sale order noted this week by Corvette Action Center.
Sadly, it’s not just the Corvettes with the potential brake problem. GM’s recall says that the problem affects 674 of the 2020 Corvettes, as well as an undisclosed number of 2021 model Cadillac CT4, CT5 and XT4 vehicles, 2020 and 2021 Buick Encore GXs, and 2021 Chevrolet Trailblazers. The recall and stop-sale covers vehicles on dealer lots, in transit, and already in customers’ driveways.
A GM spokesperson told Motor Authority that a material used between sensors in the electronic brake boost system of the aforementioned vehicles might have been contaminated during manufacturing, at the supplier level, and that could prevent important communication between the sensor and brake boost system.
When promoting the C8 Corvette, GM said its new eBoost brakes “are more precise and tunable.” The car’s brake-by-wire system applies an amount of pressure to the brakes based on information coming in from electronic sensors, rather than relying on a physical, mechanical link between the driver’s foot stomping on the pedal and the brakes. If the sensors can’t get accurate information, the brakes will not function as intended.
According to the Corvette Action Center, GM’s bulletin calls on dealers to immediately stop delivery of affected vehicles. GM will repair or replace the electronic brake booster at no charge to owners.
The automaker has reportedly notified the National Highway Traffic Safety Administration (NHTSA) about the issue. People with affected vehicles are likely to hear from GM soon about steps to take to get their vehicles fixed under the recall, which is number A202307260. No official notice has yet been posted to the NHTSA recalls website. Car and Driver has asked GM for more details on the matter but have not yet heard back. Once everything has been processed, owners can check their vehicle’s VIN on the MyGM page to see if it is affected.
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