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.

General Motors is recalling about 450,000 pickup trucks and SUVs in the United States due to a potentially inoperative low brake fluid warning light, the National Highway Traffic Safety Administration said on Friday.