ratcheting type clicking noise coming from left front wheel
I just started hearing a racheting type clicking noise when I am making a right hand turn but it comes from the left front wheel. Someone had mentioned that it could be the 4wd hub partially engaging? Does that make any sense when it is a vacuum and electric operated 4wd system? Vehicle is a 2007 F150 Lariat Super Crew 5.4l with 3.73 ratios. I have an extended warranty and I only have 47K miles on the truck. It is still also under the basic power train warranty. Would the 4wd system be considered part of the power train? Is this something easy that I can do or does it require special tools that only a dealership would have?
Input is greatly appreciated.