Brake Disc Pads problems of the 2004 Chevrolet Silverado 2500

I own a 2004 chevy silverado with approximately 52000 miles on it. When trying to come to a stop the abs brakes pulsate and the pedal drops to the floor, resulting in poor braking distance or stopping in general. I have put new rotors and pads on front and back axles and it did not help. Now I find that there is recall on previous year silverado. I believe that this recall needs to be extended because my pickup is a 04 and it has the same problem. I'm afraid somebody is going to get hurt or maybe worse. This is a serious problem. It happens all of the time.

2004 Chevrolet Silverado 2500hd with approimately 32000 miles needed to replace all brakes and rotors. Rear rotors and pads were severely rusted and damaged. I believe it is a quality defect in either the rotors or I nthe brake system itself. This truck was bought at local dealership(poughkeepsie Chevrolet). It went through nys inspection at this same local dealership. Tires were rotated regularly. Truck had been inspected at 25,000 miles with no indication(from dealer) that brakes were wearing. Took truck in to have them look at they quoted me a price of over $1,800. 00 to replace all brakes and rotors. The mechanics and service manager pointed to a pile of rotors in the back and indicated it happens all the time. Further search of internet and talking to other Chevrolet owners, indeed indicates that the brake system on this model year truck has not performed to a quality standard. I am an attentive person so I noticed that something was not right. Others may not be as attentive and without the right attention, these brakes systems could completely fail due to this defect and cause crash and injury. Chevrolet should acknowledge the defect and take corrective actions.