I decided to tackle the Chevy emblem. It did not want to come off. Left behind a lot of glue residue. I peeled off what I could and then I remembered a trick we would use when I worked in retail.
In order to get price tags off items, you smear some peanut butter over the ticket. Peanut butter is pretty oily and gets down and loosens the adhesive. I figured why not, can't hurt.
I smeared some peanut butter over the glue, let it sit a bit and wiped it off. I was able to use my nails to scrape off what was left of the glue. Took a while, but no damage to the finish on the car like I did with the alcohol
Whether it was a coincidence or not, it seemed to work for me, I'd say give it a try before using something more caustic.
Here's a pic of the little holes. The entire space where the emblem was is only about 2-1/4" high. The holes are about 3/4" apart, 3/4" from the top of the space.
Not fer nuthin' if that emblem had been in blue (I saw one at the dealership) I may have left well enough alone.
But this was more fun. And destructive