Hey all. I've read through the threads and can't quite find any answers to this... I have a 2012 Ram 2500 4x4 with the 6.7 Cummins. When I'm on the accelerator I can hear an intermittent squeaking sound coming from SOMEWHERE under the truck (seems to be drivers side). Roll the window down and can't hear it over the wind/motor. It seems to be loudest between 30-40 mph, and will go away when I let off the accelerator.

So far I've replaced U-joints in both front and rear driveshaft, U-joints in both front axles, ball joints, control arm ends, anything and everything I could think of, nothing worked. I figured last thing it might be was a wheel bearing so I replaced the drivers front hub and it's still making the sound. I'm going to replace the passenger tonight, but I don't think that's the problem.

I'm about to just throw up my hands on this one, anyone think of anything at all that it might be?