knocking noise from front steering when turning left or right when maneuvering forward or backward.
My advice to to get it in for a service person to look it over ASAP! It could be a minor issue like a stabilizer link or it could be much more serious. No way for a person over the interwebs to diagnose!
This is another vote for having this looked at now before you crash and injure someone or yourself. And there is no way to know what is wrong with out actually seeing the vehicle.