The car shakes and quakes when I start it and coolant always empty. Smokes too.

What is your question?

After every start the vehicle shakes and makes a a loud rumbling sound then minutes later it calms down. While the engine is still rumbling white smokes comes out the car exhaust a lot of it. And the coolant empties out every time I check making the engine overheat when empty. I check to see any leaks didn’t find or notice any external leaks.

How long has your 2013 Buick LaCrosse had this problem?

For 2 months now