03 tahoe z71 steering problem

[silky]

Hey all,

Truck developed a steering problem on a long drive at below highway speeds. Basically, turning in both directions feels very clunky, as if the power steering comes on and off as you are turning the wheel. Furthermore, the steering will not return to center after a turn...you have to manually return it.

I had some of the steering items replace...pitman arm for example...but the mechanic is saying the steering gear box is bad. Does this sound likely?