GM recalls vehicles for faults in the brake-by-wire system

According to a recent recall and stop-sale order noted this week by Corvette Action Center and GM, the 2020 Corvettes along with 2021 model Cadillac CT4, CT5 and XT4 vehicles, 2020 and 2021 Buick Encore GXs, and 2021 Chevrolet Trailblazers, may have faults in their brake-by-wire system.

GM’s recall says that the problem affects 674 of the 2020 Corvettes. As for the rest of the vehicles, the quantity remains undisclosed. The recall and stop-sale covers vehicles on dealer lots, in transit, and already in customers’ driveways.

The brake-by-wire system works by applying 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. When promoting the C8 Corvette, GM said its new eBoost brakes “are more precise and tunable.”

If the sensors can’t get accurate information, the brakes will not function as intended.

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, which could prevent important communication between the sensor and brake boost system.

The American 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.