On the Dash: NHTSA escalated its investigation to a formal engineering analysis after receiving additional reports of brake-assist loss in GM vehicles equipped with the eBoost system. The probe now covers 12 GM models from 2023-26, along with the Honda Prologue and Acura ZDX, encompassing an estimated 1.16 million vehicles. Dealers should monitor the investigation closely because a common component issue across multiple models could affect service volume and recall activity if regulators determine a safety defect exists. Federal regulators opened a preliminary investigation into brake-assist loss in the 2023 Cadillac Lyriq electric SUV in April 2024. The National Highway Traffic Safety Administration (NHTSA) has since escalated that investigation to a…
