Why won't my car start?

If you have no cranking of the engine, first it's important to ensure the battery is fully charged and able to handle a load. Then, ensure all cable connections are secure and free of corrosion. Next, you'll want to ensure your vehicle is showing "park" or "neutral" from the transmission's perspective. If the starting system thinks your vehicle is not in park or neutral gear, the engine will not crank. If all that checks out OK, and you're using a known good key, you'll want to check the starting system. A starter motor issue could prevent engine cranking. Good luck. https://repairpal.com/repair-shops/buick-repair-and-service-in-houston-texas