First, this is in the wrong forum. You put it in under the 2013+ trailblazer forums.
Second, if the noise goes away while turning to the right that probably means that it's a left wheel bearing that has gone bad because of the fact that when moving around a turn, the weight of the vehicle moves to the outside of the turn, which is essentially the concept of centripetal force. The extra pressure on the bearing makes the noises go away.
Third, did you lift the truck and inspect the bearings to see if they're bad? This can be an easy indicator of whether or not the bearings are going bad.
Hope this helps.