To troubleshoot power steering issues, you should:
1. Check the owner's manual: It should have a fuse box diagram showing the location of all fuses and what circuits they protect. Look for fuses related to the power steering motor or the body control module (BCM). These are more likely candidates than a single "power steering" fuse.
2. Check both fuse boxes: The 2004 Saturn Ion typically has two fuse boxes: one under the hood and one inside the car, usually under the dashboard.
3. Have your vehicle professionally diagnosed: If you're not finding a blown fuse, the issue is likely more complex and requires a mechanic to diagnose the problem. A blown fuse is usually a *symptom* of a larger problem, not the problem itself. A faulty motor, wiring harness, or control module could cause a fuse to blow repeatedly.
In short: Don't expect to find a "power steering fuse." Focus on finding blown fuses related to the electrical systems that power and control the power steering. A mechanic's diagnosis is highly recommended.