More than likely you have a defective left front wheel bearing. Inspect the bearing and also inspect the bearing on the right front. Inspect your brake pads if this is not the problem.
I'd try changing tires, worked for me.
Possible causes of popping/grinding noises when turning:Wheel bearingsCV joint / axleBrakesSee "Related Questions" below for more
Brakes
The pump will need replaced if it is grinding.
it sounds like your sprag in the tranny is starting to ware
it could be a wheel bearing that is bad or it could also be busted belts inside a tire
Its usually a U joint. Click under acceleration . While turning,a CV joint. Grinding or moaning is usually a bearing.
not sure sound like it comes from front suspension
The grinding noise in the front of a 1990 Dodge Caravan could be a cv joint. If it is, it probably only grinds when you take a sharp turn. There is one located on each side.
Bad wheel bearings usually cause a grinding noise, and are known to only cause it when turning.
Bearing going bad?
Depends on which part of the truck the noise is coming from. Could be an u-joint, a wheel bearing, a failed transfer case......