2004 Cadillac Escalade EXT Owner's Manual - Page 329

Checking Coolant The coolant surge tank is located in the engine compartment on the passenger's side of the vehicle. {CAUTION: Turning the surge tank pressure cap when the engine and radiator are hot can allow steam and scalding liquids to blow out and burn you badly. Never turn the surge tank pressure cap - even a little - when the engine and radiator are hot. The vehicle must be on a level surface. When your engine is cold, the coolant level should be at the FULL COLD mark. See Engine Compartment Overview on page 5-10 for more information on location. If your vehicle is equipped with the LOW COOLANT LEVEL message and it comes on and stays on, it means you're low on engine coolant. See "Low Coolant Level" under DIC Warnings and Messages on page 3-57. 5-23