LEFT UPPER BALL JOINT BROKE WITHOUT WARNING,LOST CONTROL OF BLAZER. BULLETIN SEQUENCE NO. 190 SERVICE BULLETIN NO.300800 , NHTSA ITEM NUMBER SB619031. DATE OF BULLETIN, 08/00. COVERING ALL YEARS. PART NOMBER FOR BALL JOINTS HAVE NEVER CHANGED ON NHTSA CAMPAIGN ID NUMBER 011018000 COMPONENT: SUSPENSION:INDEPENDENT FRONT CONTROL ARM UPPER BALL JOINT RECALL DATE 1/07/02 1996 BLAZER/ GM HAS AGRED TO REPLACE UPPER BALL JOINTS AT NO COST . THERE SEEMS TO ME A PATTERN OF SERVICE BULLITENS OVER THE YEARS TO MAKE SURE TO CHECK BALL JOINTS AND THEN IN 1996 AGREE TO REPLACE THEM AT NO CHARGE. I TALKED TO GM ABOUT THIS, FAILURE OF UPPER BALL JOINTS ON MY BLAZER . WITH THE SAME PART NO. FOR JOINTS ALSO THE NEW BALL JOINTS INSTALLED ARE THE SAME PART NO. THEY GAVE ME NO ANSWER SAID THEY ARE GLAD THAT NO ONE WAS HURT , SOMETHING IS VERY ODD HERE ON THIS PROBLEM . AND THEN THEY SAID GOODBYE. *AK