1998 GMC SIERRA — SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

INITIAL PROBLEM 09/02/98 WAS BOTH REAR AXLE SEALS LEAKING CAUSING BRAKES TO FADE. AGAIN ON 11/04/98 REAR AXLE SEALS LEAKING, ADJUSTED BRAKES. 11/06/98 BRAKES LOCKING-UP. 11/13/98 BRAKES GRABBING, REPLACED BOTH REAR BRAKE SHOES, ABS LIGHT ON-MODULE NOT ACTIVATING BRAKE RELEASE-REPLACED ANTI-LOCK BRAKE MODULE-MASTER CYL BYPASSING-REPLACED MASTER CYL. 01/20/99 ABS LIGHT COMES ON-BRAKE PEDDLE HARD TO PUSH-REPLACED ABS BRAKE VALVE. 03/23/99 BRAKES FAILED TO SLOW VEHICLE-INVOLVED IN ACCIDENT-REPLACED ABS PRESSURE MODULATING VALVE.