I traded in the 2006 for a new 2011 5.0 automatic.
When the truck is in gear and the windows open i can hear what sounds like a brake squeek when i gently step on the gas. I know the obvious answer would be to not gently step on the gas but stomp on it but it just doen't sound right. The squeek will continue at the low end of each gear as it shifts if i keep the pedal gently pressed. as the rpm's increase the squeek stops. I'm dropping it off at the dealer tonight for the remote start install which was part of the purchase deal and want to have them look into it. Has anyone had this issue or have any idea what i should tell them to look into? Thank you very much. Hank.

 

I have a 2011 5.0 automatic with alittle over 4500 miles and don't have this problem at all. Please keep us updated on what the dealer finds.

 

Dealer tells me is was the emergency brake on the drivers side and adjusted it. They claim the noise was gone but when i picked it up i still hear it. Stay tuned for round 2.

 

Update: Took the truck in and the service tech, service manager, and the sales manager all heard the squeek/chirp. We then drove a couple of other 5.0's in both screw and super cabs. All of them made the same sound. They said they would send a request to Ford for further action. Standby.

 

Update:
Returned to the dealer after 6000 miles. Truck still makes the noise but appears to run okay. The dealer tells me everything is working within specs and they don't have a fix for it. A Rep from Ford calls me yesterday and tells me the dealer cant fix it and they don't know of a fix for it. They claim they will call me if enough people complain about the noise and a tsb is sent out. The metal on metal sound should n ot me there and it drives me crazy. Is anyone else having the same issue?

 

My truck was built in Dearborn, 12/2010, I bought it 8/5/2011 and have 11,800 miles on it. I have never heard anything like you describe.