General Motors could be looking at another recall, depending on the results of a federal investigation into the 2014 Chevrolet Impala after a report of brake issues.

National Highway Traffic Safety Administration regulators are examining Chevrolet Impala models due to a driver's report that a car's emergency braking system activated without warning on several occasions, the Detroit Free Press reported.

The driver told NHTSA regulators that the Chevy Impala was on the road at 40 mph when the brakes activated without warning. No one was in front of the Impala, but the car was struck from the rear by another vehicle.

No injuries were reported in the brake incidents. If the problem is found in the vehicle make, the issue could affect more than 60,500 Chevy Impalas of model year 2014 sold in the U.S.

The NHTSA closed an investigation into the Saturn Ion earlier this week thanks to a GM recall for 335,000 vehicles. The cars were recalled for power steering issues that have been related to 12 crashes.

Looking at cars from the 2004-07 model years, federal regulators opened the first stage of the investigation in January 2010, according to Reuters.

The Saturn Ions are also included in an unrelated 2.6 million-vehicle recall for problematic ignition switches, an issue that has been connected to 13 deaths.

GM is still reeling from a massive 2.6 million-vehicle recall that has been connected with 13 deaths. The recall was recently expanded to include another part.

Besides the problematic ignition switches, dealers will be replacing ignition lock cylinders on the recalled small cars, Edmunds.com reported.

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