TSB # 09-03-10-009, steering wheel vibration issues

Has anyone had this problem? 09 Malibu LTZ with V6. The TSB is specific to 18" wheels.

When driving, after turning, or making slight adjustments in the lane you are driving, when the wheel returns to center, you can feel a slight pulsation in the wheel; it will not return smoothly. While driving straight, you cannot feel a thing.

Service manager and tech know about it, they started by replacing the front tires; tech said as he balanced it he could still see the tire was slightly wobbly. TSB had a GM tech guy's actual phone number on it, so I'm wondering if this is a bug that affects a small amount of cars.

Anyone else had this issue?

So far, I've had a radio squeak problem, the bluetooth issue, a seat trim piece that kept popping off, and now this. If GM had that 60 day guarantee when i bought the car, who knows, I might have used it.