Just heard this the other day, sounded like a whining sound going down the road. Only time I can hear it is when the rear slide glass is open. Sounds like tread on tires but I have never heard this before. Let off gas and you could tell if would go down as well, then get back on the gas the sound would rise. Thanks for looking

 

Is the sound there, whether you are on the gas or not, and just changes with vehicle speed?

 

2009 AA 9.25 rear ends had many issues. I wore mine out even after a recall, it was shot. Complete rebuild including axle bearings at just over 100k miles. My guess is that it's time for a rebuild. If it's a 2wd and are going to keep it, I would buy a new (or refurbished ) unit and swap out the whole thing. This way you can also re gear it.

 

sound is there either on the gas or not, but its only around 25mph when you hear it

 

its 4wd and I hope that is not the problem, thanks

 

That's going to be an axle, or carrier bearing. Possibly brakes? Have you looked at the pads?

 

I have not but I will today after work, thanks

 

I have had everything checked out and it all comes back good, but there is still the noise.........I feel that it is the rear end but I can not pin point where. Thanks for all in replies

 

Did they disassemble and inspect?

 

After more research and everything, conclusion is the pinion gear/bearing. Having it fixed Monday and while its apart having everything checked out. I think part of the cause was from pulling a mowing trailer 4 days a week for the last 7 years. Thanks again for all the replies