Two problems related to abs brake fail have been reported for the 2004 GMC Envoy. The most recently reported issues are listed below.
Bought the car 2006 was two years at that time less than a week into replaced brakes for abs failure. Still happening, took it back said everything was normal. Well about two weeks ago my wife was going up-hill to a stop light hit the brakes on slick pavement and the brakes locked up and abs did not kick in. Causing my wife to total two vehicles that I am now being sued for one of them.
Rainy conditions. . . Slick conditions. Skidded while traveling 20-25 mph. . . Skidded over the left side of median, corrected and couldn't regain control. >abs brakes failed (abs light on during end of skid into crash). Car landed in ditched, 90 degrees onto passenger side. Total loss to car. Slight injury to driver. >airbags never deployed upon rollover to passenger side.