NHTSA Complaint #10052568 — 1997 CHEVROLET BLAZER

THIS IS A 1997 CHEVROLET BAZER. THE ANTI LOCK BRAKES ON THIS VEHICLE IS DEFECTIVE AND INGAGES UNDER VARYING CONDITIONS. THE VEHICLE IS UNSAFE IN SLIPPERY CONDITIONS. FRONT SENSORS HAVE BE CHECKED. THIS VEHICLE WILL ENGAGE ANTI-LOCKS AT TIMES WHEN BRAKES ARE NOT APPLIED. BRAKE SWITCH CHECKS OK. PEDAL WILL DROP UNDER MOST STOPS AND ANTI-LOCK WILL SCREAM AND APPLY. A JERKING BRAKE ACTION IS PRESENT. I DO KNOW THERE IS A RECALL ON 1994-1996 MODELS. BY LOOKING ON THE INTERNET I SEE THAT I AM NOT ALONE IN THIS PROBLEM. HUBS ARE OK. I THINK THE TROUBLE MAY BE IN THE CONTROL UNIT, BUT NO TROUBLE CODES APPEAR AND SCAN TOOL INDICATES NO TROUBLE. I THINK GM HAS PRODUCED DEFECTIVE UNITS. THIS CAR HAS 90000 MILES BUT HAS HAD EXCELLENT CARE AND NO DAMAGE. I WOULD LIKE TO KNOW HOW TO DISCONNECT THESE ANTI-LOCK BRAKES. THEY ARE UNSAFE. THERE APPEARS TO BE NO WAY TO DETECT THE PROBLEM. *AK