To find the correct fuse(s) and relay(s), you must consult your Escalade's owner's manual. The manual will have diagrams showing the fuse box locations (usually under the hood and sometimes inside the cabin) and identify the specific fuses related to the air suspension or level ride system.
Without the year and model of your Escalade, I cannot give you a precise location. The fuse box layouts and components vary slightly between model years.