general problems of the 1996 Chevrolet Astro

When stopping the truck it takes about 1 minute for the brake pedal to go down, and usually it goes all the way down to the floorboard of the truck and loses all of the braking power. Consumer states that ever since the power assist brakes were changed from vacuum to a hydraulic booster, the emergency brake is difficult to operate and weak, the vehicle can not be shifted to park until the engine is started and the rolling speed is sufficiently slow, and when stopped on a grede with the motor off, the foot operated brakes will fail.