My Buick lesabre shaking

Go make sure you have oil in the engine before starting it again. It wouldn't be the first time that someone didn't refill or left the oil plug drain loose. I assume the engine vibration is causing the steering wheel to shake. Need more info, good luck.

At what speed does the shaking happen? Stan has a good point, they might have failed to put in oil, but without oil, if you drove it any distance, the engine would overheat and knock. I don't know why but it is possible that they knocked off a balance weight while doing the service....some places check the air in your tires, I do all my own service because there are so many stories out there about incompetent service people.

Mine is same thing I'm a single mom and they over flowed my oil now I don't know what to do about it