Where is the oil pan drain plug on a Buick Terraza?

The oil pan drain plug on a Buick Terraza is located on the bottom of the oil pan, which is situated beneath the engine. To access it, you typically need to raise the vehicle using jack stands for safety. The drain plug is usually a hex or square-shaped bolt that can be removed to drain the engine oil. Always ensure the engine is cool and take precautions to avoid spills.