so i have a odd noise while driving, and curving left, but not when going around a right hand curve. you really cant hear it until you hit about 30-35 mph. truck has about 56k on it. the reason i think it is a wheel bearing is because i have the same problem in my caviler, same side and everything (guessing drivers side)

 

Try jacking up the truck and twisting the wheel back and forth and up and down. if it has too much play then they are bad.