1994 Chevrolet S Pickup

I HAVE A PROBLEM WITH THE BRAKE SYSTEM ON MY VEHICLE,1994 CHEVROLET S10 TRUCK,(VIN#[XXX]). I HAVE HAD THE PROBLEM SINCE I PURCHASED THE VEHICLE AND I HAVE BROUGHT IT TO THE ATTENTION OF THE DEALER I PURCHASED IT FROM (SANDS CHEVROLET, GLENDALE AZ). THEY HAVE TOLD ME THAT EVERYTHING IS WORKING PROPERLY. I RECENTLY CAME ACROSS SOME INFORMATION REGARDING TWO (2) CAMPAIGNS FROM GM (#99I006000 AND 96V195000) THESE BOTH DEAL WITH THE EXACT PROBLEM I HAVE PRESENTED TO THE DEALER. I CONTACTED GM CUSTOMER SERVICE AND TALKED TO [XXX] NELSON A CUSTOMER SERVICE SUPERVISOR WHO TOLD ME THAT GM HAS NO KNOWLEDGE OF THESE CAMPAIGNS. SEEMS STRANGE TO ME THAT GM DOESN'T KNOW ABOUT THIS PARTICULARLY WHEN IT IS A SAFETY ISSUE. I HAVE BEEN INVOLVED IN AN ACCIDENT DIRECTLY RELATED TO THE MALFUNCTION OF THE BRAKES ON THIS VEHICLE, SEEMS LIKE GM DOESN'T WANT TO BE RESPONSIBLE FOR PRODUCING DEFECTIVE SYSTEMS THAT MAY RESULT IN CONTRIBUTING TO AN ACCIDENT.*AK INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR