I've searched and seen similar problems and possible solutions none of which have worked. I have a 2014 and recently noticed a loud creaking noise coming from the driver side rear wheel. The noise is made when not moving and pushing down on the brake pedal. I have read about similar issues and have cleaned/greased the entire caliper, slide pins, parking/drum, and even rotated the caliper piston but it continues creaking. It goes away or greatly decreases with the engine off. The truck has about 50k miles on it and is in good shape. The brake pads look like they have plenty of life still in them. Any ideas? Thank you in advance!