high pitch whine

mwaite09 said:

So I started having a high pitch whine over the last month or so and cannot figure out where it is coming from??? It sounds like it's coming from the back and it starts at any speed and the pitch gets higher (louder) the faster I go. I took it to a shop yesterday where the put it up on the lift put it drive and couldn't figure out where it was coming from?? They think it is either the drive shaft or differential but was unsure.

I drive a 2010 6.2 crew with just over 75K miles. I have an audio file I recorded but cant figure out how to upload it.

Any help is appreciated before I take it to 4wheel parts next week.

Click to expand...