Oil Pressure high on 2005 Chevrolet Avalanche 1500

My oil pressure is running higher than before (40-45)and it fluxuates as the vehicle speed does. Oil Sensor or Oil Pump?

Asked by for the 2005 Chevrolet Avalanche 1500
Most commonly this would be a oil pressure sensor fault on your 2005 Chevrolet Avalanche.
Is the oil pressure sensor fault a easy fix? Time consuming?
How many miles on engine? What kind of oil do you use? Allot of times the oil pressure will fluxuate 10-15lbs.