Two problems related to brakes failed have been reported for the 2016 GMC Sierra. The most recently reported issues are listed below.
At 38,200 miles, the truck experienced a loss of break pressure while in a parking garage traveling at low speed causing the vehicle to narrowly miss hitting a concrete upright. After realizing there was a break issue, vehicle was able to be carefully moved from the parking garage by coasting on the break. After restarting the vehicle, the first depress of the break seemed to give full pressure, but each subsequent depress gave less and less pressure. Vehicle had to be towed to nearest dealership and is currently awaiting diagnostic. Problem appears to be part of ongoing investigation into brake vacuum pump failure (NHTSA action number: pe18012).
Brake failure issue at low speed. This happened in two separate occurrences in parking lots. The brake pedal became very still and required grabbing the steering wheel and using it to pull myself down harder on the brake pedal to get the vehicle to stop. This resulted in greatly increased stopping distance. Fortunately no vehicles or people were in my path during these occurrences. Gm has since repaired my vehicle. I have since received a notice that they are repairing this issue only after the owner has a brake failure problem. This is extremely unsafe and is unacceptable. Owners need a solution and do not need to worry that this issue will arise again. If I hit a person or a vehicle, will gm pay for medical bills, vehicle repairs, legal fees? this truck as well as my last 2009 Chevrolet silverado had issues with the drive train that gm classified as normal. These trucks should not have drive shaft clunk when stopping at a traffic light. These vehicles have major mechanical concerns and their quality is trash!.
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