Where is the stock block heater cord on a 1997 Chevrolet Astro?

The stock block heater cord on a 1997 Chevrolet Astro van is typically located on the passenger side of the engine block, near the bottom. It's often tucked up fairly high and somewhat out of sight, sometimes near the oil filter or other components in that area. You'll be looking for a heavy-duty cord plugged into a receptacle on the engine block itself. Because of its location, you may need a flashlight to spot it.