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.

GM told regulators that indicators may not warn drivers of low brake fluid, which raises the risk of a crash. Some 449,671 vehicles are affected.

General Motors is recalling more than 449,000 of its SUVs and pickup trucks because the electronic brake control module software may fail to display a warning light when a loss of brake fluid takes place.