Bumper to bumper traffic on freeway les than 5 mph traffic suddenly stopped i depressed brake and vehicle did not stop. slight rear end collision resulted. a second and similar traffic condition resulted at low speed the brakes did not stop the vehicle appropriately. i had to fully depress the brake pedal and the vehicle slowly came to a stop. the vehicle appears to be acting like it doesnt have 'power' brakes.
2 occurrences i have been driving the vehicle, without notice i loose all power steering function, power brakes function and all abs/traction control. several warning lights are displayed on dashboard. both times the vehicle has been towed to the nearest chevrolet dealer for repairs. both these occurrences have happened while driving on major streets, the first time i was going around a curve on the street appx 40-45 mph, lost all functions and nearly lost control of the vehicle.