I'm not certain your second gen Aveo suspension is exactly the same as my first gen, but the LCA part number is the same, so I'll assume they are. The really important thing to know if the captive nut threads in the K frame are still ok, or if they've stripped out. Has the end of the bolt come out of the K frame (can it be wiggled around a bit)? Or, more importantly, can you re-tighten the bolt back at 81 ft lbs into the K frame? I hope those bolt threads haven't stripped because that would be bad news.

If the threads are ok, then the first thing you could try is cutting out the softer bushing material, getting down to the metal bushing sleeve. Then, if you can open and close a vise-grip around the surface of the sleeve, that might be enough to free it up and also counter the torque on the bolt. PB Blaster or LW might also help that process as well.

Or you could heat the sleeve to free it up that way. But if all of that fails, you'll probably need to cut it out with an angle grinder or recip saw. But a disclaimer that I did not need to do that on mine, so I can't tell you exactly how to go about doing that one. You can get replacement bolts at a stealership, or from a U-pull (which is what I did). The 2 bolts are identical. Good luck with it - living in the rust belt makes this stuff become a RPITA.