My 2015 silverado 4.3 is doing something weird and I can’t figure what’s causing this. Whenever my truck is slowing down, I don’t even have to be breaking just slowing down, around 20 mph I will feel a sort of jerk or clunk from under the truck. Sometimes I can even hear it. Truck does have 175000 miles on it. Any advice on how I can locate the problem or has anyone else experienced this.