"or even stick your head up under there in the footwell and you should be able to see the column universal joint. Perhaps wiggle the steering wheel left/right while the engine is off, (as that will put a lot of torque on that joint) and see if it is what's causing that sensation."
I did this and took some video. So there is a U joint above the pedals, and one below the pedals, hidden behind the firewall in what looks like a rubber boot. So I could only really look at the one above the pedals, and it looked fine, with no apparent looseness. It seemed like the noise *may* have been coming from it when I wiggled the steering
wheel. However, there is also a bearing above this U joint, and it seemed more likely that the noise was coming from the bearing, or above it, in the column where the wiper stalk is. I will post the video when I get home.
Not sure why the dealers don't want to inspect these things. Every time I've spoken to one, I got this vibe that unless there is a code in their scan tools, they're clueless. One at Genesis of Oak Park insisted that EVERY car on their lot did this. I laughed, said, "OK, show me ONE car that does this." And then he clammed up and made more excuses, and refused.
"In addition to this, there is another universal joint underneath the car that angles the steering shaft into the rack/gearbox/motor assembly. The picture that the FSM provides doesn't really line up with what I saw underneath my 3.3 IIRC, but the joint should still be relatively easy to inspect with the bottom engine cover/splashguard removed. Again, you would have someone attempt to turn the wheel left/right with the engine off while looking at the u-joint to see if it's loose or something."
Sadly, this isn't something I can do due to limited space, and due to the fact that the dealer/Hyundai would definitely fight me if I touched anything on this car with a screwdriver. I know, I know, Mag-Moss and all that, consumer rights, etc...I just can't handle another fight with them right now. So if something requires even a little disassembly, I'm only letting the authorized dealer do it.
"If both of those are tight, I don't know... Maybe some bolt(s) really is a little loose somewhere along the column/shaft/rack line. It could be a very simple fix, and it wouldn't be the first time there was a loose bolt on a brand new G70. With mine, I found a very loose primary downpipe stay bracket the very first time I inspected the exhaust underneath the car."
You're probably right. But given that a lot of these techs don't seem interested in diagnosing anything, they'll probably eventually cave and replace the whole steering column. Which is fine by me, if they do it right, and the noise/steering
wheel pop sensation goes away.