2004 Cadillac XLR Owner's Manual - Page 250

Cooling System When you decide it's safe to lift the hood, here's what you'll see: {CAUTION: An electric engine cooling fan under the hood can start up even when the engine is not running and can injure you. Keep hands, clothing and tools away from any underhood electric fan. If the coolant inside the coolant surge tank is boiling, don't do anything else until it cools down. The vehicle should be parked on a level surface. A. Electric Engine Cooling Fan B. Coolant Surge Tank with Pressure Cap 5-26