^ Well when you consider all the important/serious issues happening around the world right now (multiple hurricanes,- thousands homeless- whole island nations wiped away, nut job in N.Korea with nukes, London terror attacks, 143 million ppl credit info hacked, N.E. Pats lost their first game, etc....) a couple of drops of tranny fluid from a new car with a full warranty isn't really much to get worked up about.
I suspect this fellow is the only owner on the planet to have removed that belly pan. So we have no idea whatsoever of the frequency of this problem. After a year, perhaps enough ATF may accumulate on the pan to drip onto the ground.
We don't actually know what is leaking. The guy in the blog doesn't even really know since he calls it both a transmission leak and a cooling leak. Both fluids are red. No need to go pulling belly pans off. If it's leaking the drops will make it to the floor right through the belly pan. If the leak is bad enough to cause an immanent roadside failure, the leakage will be really obvious with the belly pan in place. Hopefully the blogger will post back about what the dealer finds.
I decided it was time to take a look under ours. I don't have a service pit, or a hoist, but have done plenty of work with a pair of ramps over the years. I spent an hour crawling around under the Bolt with a small LED flashlight. Had a ball, and learned a lot. I didn't end up needing to pull the 28 small bolts holding the belly pan on. There are eight holes in total that you can run a finger up in, and around, and you can actually see the top side of the pan, and the bottom of the drivetrain, from the passenger side wheel well area. Also, the steel tubes where the o-rings are located, are visible, and you can run your fingers over them from under the hood. I am happy to say everything is bone dry. While I was down there, I checked out the brakes, suspension, sway bar, and rack and pinion steering. The bottom of the car is closed up from the front air dam, all the way to the backend of the battery pack. Not sure why they didn't make any attempt to close off the two feet under the cargo area, unless the air is so slowed down by then that it wouldn't make much difference. I checked out the electric parking brake units while I was back there. Interesting that both front and rear bumpers are massive aluminum extrusions, under the plastic covers.
What I had assumed was the AC, or some other pump noise, turns out to be the pedestrian noise maker that runs any time the car is in gear, up to 15 mph. More bizarre, with the car in Park, with no accessories on, if you pop the hood, the AC condenser runs, and you can feel it vibrate slightly under your hand. It goes off when you close the hood. Whatever could that be for?