How do you find the petcock on 2004 Cadillac SRX?

To locate the petcock on a 2004 Cadillac SRX, first, ensure the vehicle is parked on a flat surface and the engine is cool. The petcock is typically found on the lower side of the radiator, near the bottom. You may need to crouch down or use a flashlight to see it clearly. It's a small valve that can be turned to drain coolant from the radiator.