WE WERE DRIVING OUR EQUINOX AND THE BRAKES FAILED TO WORK. THE BRAKE PEDAL WOULD NOT DEPRESS. WE HIT THE CAR IN FRONT OF US ON THE FREEWAY OFF RAMP AND THAT CAR HIT THE NEXT CAR. BOTH DRIVERS REPORTED INJURIES. THERE WAS NO WAY TO SLOW DOWN LET ALONE STOP. THE AIR BAG DID NOT DEPLOY EITHER. I RESEARCHED THE ISSUE AND FOUND A BRAKE BOOSTER IS THE PROBABLE PROBLEM. BOTH OUR CAR SERVICE PROVIDER AND ON LINE BLOGS LIST THIS AS AN ISSUE. SOMETHING ABOUT THE VACUUM AND BRAKE FLUID CAUSING TOO MUCH PRESSURE SO THE BRAKE PEDAL COULD NOT BE DEPRESSED. THIS HAPPENS IN HIGH HEAT AND WHEN THE CAR IS ON A HILL. AFTER THE CAR STOPS AND COOLS DOWN OR IS LEFT ON LEVEL GROUND, THEN THE BRAKES START WORKING AGAIN. THIS MAKES THE ISSUE HARDER TO FIND ACCORDING TO OUR CAR REPAIR SHOP. WE HAD GM TAKE A LOOK AT THE ISSUE AND THEY SAID THERE WAS NO OVERALL DEFECT IN THE PART. THEY DID NOT LOOK AT OUR SPECIFIC PART. THE INSURANCE COMPANY TOTALED THE CAR. THIS IS A BIG SAFETY ISSUE. WE HAD SO MANY PROBLEMS WITH THIS CAR INCLUDING HAVING THE ENGINE REBUILT FOR THE HIGH OIL USAGE ISSUE. WE ARE GLAD THAT WE AND OUR CHILDREN WILL NOT BE DRIVING THIS DEATH TRAP ANYMORE.