Yes sometimes the squeak happens when I start the truck but only for a few seconds while idle. The squeak really begins while I am driving, especially if I have the Heat on high...If I turn the heat down it subsides. I also notice the squeak while I'm driving and turn the steering wheel.
The Squeaking began before I had the belts changed- Once I changed them, I noticed that the sound is back. By the way I only have approximately 35,000 miles on my truck.