GM Faces Expanded NHTSA Probe: Over 1.1M Vehicles Including EVs Report Brake Assist Loss

General Motors is under an extended safety investigation by U.S. regulators, covering more than 1.1 million vehicles. The probe was triggered by multiple driver complaints about sudden loss of brake assist, a problem that could seriously affect vehicle stopping capability.

The models under scrutiny span several GM brands and include both internal combustion and electric vehicles. Interestingly, some vehicles built by GM for Honda are also part of this expanded look, pointing to shared platform technology across manufacturers.

This is not just a minor technical glitch; brake failure reports often lead to recalls and can be a red flag for larger systemic issues. The investigation’s scope suggests that the problem might affect a wider array of models than initially thought.

As the probe advances, GM owners—especially those with EVs—should watch for official updates from NHTSA. If the agency finds a defect, a recall could follow, which would mean free repairs for affected vehicles.