NHTSA expands GM brake failure probe to 1.1 million vehicles
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The National Highway Traffic Safety Administration expanded a safety investigation into General Motors vehicles after receiving 745 reports of brake failure. The probe covers more than 1.1 million cars, including GM electric vehicles and models built for Honda and Acura. Twenty-two crashes and six injuries have been reported, with no fatalities.
Key Facts
- NHTSA has received 227 incident reports, and the total rises to 745 when including reports to GM.
- The affected vehicles include 2023-2026 Cadillac Lyriq, Chevrolet Colorado, GMC Canyon, and 2024-2026 Honda Prologue and Acura ZDX.
- Twenty-two cases resulted in crashes, with six people injured in five crashes and no fatalities.
- GM says the eBoost system should retain antilock brakes, traction control, and stability control until the vehicle stops, but NHTSA reports contradict this.
Brake System Failure
The brake-by-wire system, called eBoost by GM, can suffer a spindle fracture while driving. GM states that in the event of a fracture, critical safety features such as antilock brakes, traction control, and stability control should remain operational until the vehicle comes to a complete stop. NHTSA's Office of Defects Investigation has received many reports alleging that eBoost failures are followed by an immediate loss of braking.
Affected Models
The vehicles equipped with eBoost include 2023-2026 Cadillac Lyriq, Chevrolet Colorado, and GMC Canyon. Also affected are 2024-2026 Buick Enclave, Envision, Chevrolet Blazer EV, Equinox EV, Traverse, Cruise Origin, and GMC Acadia. NHTSA is aware of 2024-2026 Acura ZDX and Honda Prologue vehicles built with the system.
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