Two problems related to abs brake fail have been reported for the 2020 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 GMC Sierra 1500 based on all problems reported for the 2020 Sierra 1500.
Electronic abs brake failure with 73 miles on odometer while stopped at red light alarm chimes sounded and power brakes were lost. Warning lights on dash abs brake failure multiple engine warning lights came on. Dealer service was puzzled needed to contact gm technical support. Final outcome they are replacing the electronic brake module.
The abs system failed while driving down the road causing the brakes to lock up and caused the truck to spin out of control nearly crashing into another vehicle and jumping over the center divide into oncoming traffic.