It started this morning, on the way to work. I can not tell if it is vibration or rubbing, but it seems to happen when accelerating, both at high speeds and at low speeds. I am not sure if I can feel it, but I can definitely hear it, and it sounds like it is coming from the front, passenger side. I pulled off and looked under the vehicle, nothing hanging or seemingly out of place, same with under the hood, though I am not a trained mechanic.

Loose belt?
Haven't been changed in a couple of years.

Wheel problem?
Only issue after last alignment was rear, drivers side wheel and it was only off by a very little.

Exhaust?

Any questions that I could answer to help identify the problem, or tell a mechanic would be a tremendous help. Using the search is difficult because it is hard to place right now. I will update with any relevant information I come across.

sounds like your wheels r not balance...u need to rebalance then...maybe some weight came off...or also wheel bearing....

Don't forget wheel bearings. But and like this guy said^^^ get balanced. Running around in a truck that vibrates like that will literally shake things loose. Not safe so get it fixed ASAP.

It does not shake the wheel, like the usual unbalanced wheel would.

Ok so you would also need to look at other components of your drive train. CVs, driveshafts, pinion angles, loose joints (upper and lower balls), engine mounts, etc. replace your belts if just for safe measure.

If you take it to a mechanic just have them do a ride along so you can show them what it is doing and they would be able to tell you more specifically what it is. You could take stabs at this all day and never find the culprit. If your takin it to a shop just do so.

drive shaft has bolts in both ends..make sure there tight and not lose...

Vibrations under acceleration normally indicate a bad U-Joint and can transmit the vibrations up the drivetran very well.