Auto safety regulators said a brake control module software on some GM models may fail to display a warning light when a loss of brake fluid occurs.

Without the warning light, a vehicle may be driven with low brake fluid, which can reduce braking performance and increase the risk of a crash, safety agency said.

General Motors (NYSE:GM) is conducting a noncompliance recall of nearly 450,000 of its vehicles after identifying an issue with its brake fluid indicator systems. An assessment from the National Highway Traffic Safety Administration found that certain GM vehicles could be at a high risk of a crash in the event of a brake fluid leak,