Low Jacking a Volt
I have a Volt and I found that my floor jack would not go under the Volt. Further, the typical process is to find a jacking point in the front center, jack it up, put in jack stands, find a jacking point in the rear center, jack it up and place jack stands in the rear.
I did not find a good candidate in the front center of the Volt. I change the oil and rotate the tires on all my vehicles and I've been wanting a better jacking solution anyway.
What I found was an air/hydraulic low profile bottle jack ($56ea. Harbor Freight). 7" clearance on the jack. I hook them up in pairs. You have to start with the rear. After you jack up the rear you will have enough clearance to get to the recommended jacking points up front. The front jacks took a little fussing with but I think I can do it next time right of the gate.
This setup was just for rotating tires I wouldn't stick my head under there without jack stands or the like.
Once you rotate the tires you have to relearn the TPMS system. The book advises a relearn tool. Some have suggested a strong magnet. I tried that. First with a small parts holder that is very strong. Then with a magnet about the size of a small brick. No dice.
Others have suggested that letting air in or out for 5 seconds at each tire will work. Tried that. And then for 10 seconds. Still no dice, but eventually I figured out what would work.