Table 1 shows seven common service brakes related problems of the 2020 GMC Sierra 1500. The number one most common problem is related to the service brakes (39 problems). The second most common problem is related to the brakes failed (six problems).
Lifter failed due to afm system. Cyl 8 misfire due to oil fouling. The onboard computer got confused and would not release the parking brake until repeated attemtps to release it. 5. 3l v8 2020 model year 115250 miles. Isn't this the same problem as the 2021 and newer engines? 8spd transmission. Read details...
After having all sorts of warnings over time like "service esc," "service parking brake," and more, I now see "brake system failure: 62 mph top speed" flash across my dash. I am reading and hearing that this is a very dangerous problem. New truck. Brand new. Read details...
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. Read details...