If you bought it at Lowes it's probably on it's way out. If your lucky, the motor will have ball bearings not bushings and they can be replaced. The bearings are about the only thing on a motor that can make noise. The only pumps that are noisy are the plastic ones and they are noisy out of the box.
If you bought the bladder tank at a big box store and it's over 1.5 years old, it's probably bad. If you want to learn more than you ever wanted to know about bladder tanks, go here.