Vibration in gas pedal, hum/roar when driving

Ok, I think it’s a wheel bearing, but not entirely sure. When accelerating, I first feel the vibration start in my seat but mostly in my pedal. I notice the vibration and the hum at 50mph. The hum gets worse the faster I go, but the vibration will move to my steering wheel and then stop altogether around 75mph. At 60mph, I have “swerved” left and right in my lane and noticed that the vibrations would stop when I “swerved” left and got worse when I went right, but, the hum/roar never stops. Furthermore, the truck shakes and wobbles when breaking but has brand new brakes and rotors.

The swerving first made me think it’s a wheel bearing but some of the other symptoms make me think it’s something else. God help me if it’s a rear wheel bearing… any ideas?

2008 5.7 base double cab, 2WD with 214,000 miles… new tires, breaks, and rotors with a new alignment.

 

Even though you have new tires, I’d still rotate them to rule them out

 

I tried that too. In fact, you can hear the road noise from the tires separate from whatever this is. I saw in another thread people were talking about a needle bearing but just wanted to see some common issues people might have had.

 

Center support bearing for the drive shaft?

Give 'er a nice shake

 

most likely front left wheel bearing, to check wheel bearing jack the wheel off the ground and rock in and out on 12 and 6 o'clock, if you feel any play its the wheel bearing.

 

I’m not sure how much “play” should be in the center support bearing, but it definitely has some. I’ll start with the front left wheel bearing and check if there is any play in it today. If not, looks like I’ve got a lot of diagnosis ahead of me to figure this out. I’m too poor to replace every bearing at once in this thing lol.

 

...well, I'm not certain either. Can check mine in the morning tho.

Imagine it should have little to no play up and down (or side to side), and probably a decent amount in and out.

*The preceding has been a pontification by COTundie, and may have no relation to the truth.

 

should be no play at all, any play will make your steering shake and wobble...
2wd front wheel bearing should be easy

 

This was in relation to the drive shaft, not wheel bearings.

A drive shaft typically is able to slide in and out to accommodate varying suspension angles. If it is however able to move up/down/side to side, I would suspect the center support bearing is past its prime, and should be replaced.

 

Yeah, the center support bearing has about an inch of play in all directions. I assumed it was supposed to be able to move around a little to accommodate the drive shaft and varying angles but, maybe not that much. I may have more than one issue at play here.