4WD needs service. How much should I pay?

[05yukonn]

I'm not all that knowledgeable with engines and auto parts so I don't know how much to expect to pay for my 4wd to get serviced on my 2005 yukon. I don't think it's ever been serviced before and it's 10 years old. My parents owned it before I did and they took good care of it.

 

[RMCIII]

Are you saying the 4WD message is being displayed on the dash, or are you saying, that the fluids need to be changed?

 

[05yukonn]

Yes the message is displaying on the dash saying it needs to be serviced

 

[SLCHOE]

Yes the message is displaying on the dash saying it needs to be serviced

That would be a fault. You need to have the ATC system checked for codes. C0327 usually means a failing encoder motor position sensor which is a cheap fix if you buy the sensor itself from Dorman.