Weird vibration noise on acceleration and turn

[aberrant]

I'm getting this weird vibration noise upon acceleration and when turning left. I used to only notice it when taking a left hand turn at higher speed, but lately i've been hearing it at times with acceleration driving straight. It sounds like something is vibrating in the rear cargo area, but I'm not sure if it's outside the truck or inside. It's driving me crazy. At first I thought it was a wheel bearing, but now that it is doing it on straightaways too, I don't believe a wheel bearing is at fault. Any ideas here?

 

[BrooklynBay]

Have somebody come along with you for a ride so that they could listen to it as you drive. They could sit in the back on the side that's making the sound.

 

[1997XLTRollover]

Worn CV's? I know my trucks have some real bad weird vibration after doing a TT and accelerating hard form a stop especially. I put limiting straps on my 96 and it helped significantly but it's still not gone. I think my CV's are just worn but they don't make noise in turns or pop so I really don't want to replace them.