One problem related to anti-lock brakes fail has been reported for the 2003 GMC Envoy. The most recently reported issues are listed below.
1. Normal winter driving in northeastern ohio. 2. Anti lock brake system failed to operate. The result was immediate loss of control of the vehicle, causing it to slide into oncoming traffic on a rural country road where it was struck by an on coming car. 3. The car is totaled as assessed by the insurance company, no repairs made.