Two problems related to abs brake fail have been reported for the 2001 GMC Sonoma. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 GMC Sonoma based on all problems reported for the 2001 Sonoma.
Abs failure at slow speeds-abs tries to engage,brake is slow at first with noise and then abs light appears and engages dangerous braking resets after turning off goes through it all again nest time you drive.
Abs brakes fail (vibrate/shudder/grind) during bumpy and turning conditions. They do not stop car. Dealer notified of problem and indicated that it is normal. I think brakes are defective since they do not stop car at all during previously mentioned conditions. For example, I recently went through a dip and put the brake pedal to the floor without stopping.