2000 Grand Am Popping noise on front end.......

Ok...I have had sooo many things replaced in the front end of my car that I don't know what could possibly be bad now. I have had both of my cv axles, outer and inner tie rods, lower control arm, wheel bearings, etc. all replaced. If my car is in park I can gently wiggle my steering wheel back and forth and you can hear a little pop each time you wiggle it in back and forth. Now, when I am driving on the highway I hear something rattle and it seems to be coming from the same area up on the drivers side. I have been told that it looks like my caliper is a little loose(meaning that it is probably needing replaced since I do have 137xxx on this car), so could this really be the cause of this noise or do you know of anything else that this could possibly be? Thanks so much.

I would have somebody take a real good look at the Bolts that hold the rack and pinion in place. These are notorious for loosening up and causeing noises.

hello, i dought its a caliper.maybe a loose brake pad(anti-rattle clips)
i'd check the stut tower plate/bearing.i have a 98 there is a rubbing type noise when rocking steer/wh but thats in the column on mine & doesnt bother me