Fellas,
When I bought the car, 3000 miles ago, the dealership changed the oil. Now, over the weekend I get “OIL LEVEL LOW” in the DIC. Well, it went away while driving but returned. I check the oil and to my surprise it really was low! Not even enough to cover the min mark. I looked under the car for leaks, nada. Where did the oil go? Is this common? I only have 67k on the clock.

Very odd. I would suggest doing a oil change, make sure you have the correct level, and then monitor it for the next 3000 miles. If it drops then start looking in to where it'* going.

Make sure to look for leaks around the manifold where they can drip and burn off. These are hard to find and also dangerous as they can start fires.

pull the 710 cap off, fill it up, take her for a 15 min drive to get everything warmed up and park it over a large piece of cardboard.

I second the oil change, it is due for it any way. When they are done, confirm it is at the full mark, then check it on a regular basis. Every 3800 I have seen averages using a quart by the time for the next oil change. Any thing beyond that, you have issues.

My 2001 SSEi Bonny goes through1 quart every 1250 miles. No leak, doesn't visually burn it. This has been going on for past 6+ years. Mileage is now 155k. I simply accept it and add a quart 2 times before each oil change.After over 6 years of this, I lose zero sleep over it. My Bonny is a great vehicle, runs great and has never left me stranded.

GM tells their techs etc that a quart every 3,000 is normal. Makes you wonder if the last change was full.

A quart every 3k? Geeeez. I only change the oil when it tells me to (about every 5k or so) and my car doesn't use any oil.

my 3400 monte and 3800 bonnie have lost about a quart every 5k when i change it and have done that since i got them and i have 155k on the bonnie and about 170k on the monte now

Same, since my overhaul. It'* probably the rear cover gasket that'* leaking like a sieve. If you want to pull the engine and fix it, more power to you; otherwise, just keep adding oil as needed and you'll be fine.