I recently bought a 2004 Tahoe, the power steering pump whines a bit after it’s been driven for a bit.
Checked the fluid levels a few times and it dawned on my last night.
The fluid that’s currently in my power steering pump is red (ATF I’m assuming) I know ford used ATF a lot but shouldn’t my fluid be like a clear or yellowish color?
If it’s the wrong fluid I’m assuming this might be my problem?
When I first bought my '02 Z71 2.something years ago, I had the same issue.
In my case, when I SAW an ATF leak, I ASSUMED my 4L60E was leaking.
Turns out it was my power steering, leaking ATF.
I replaced with PSF (Prestone makes very good PSF).
It soon became very 'clear' that, in order to fix the leak, I had to replace ALL the power steering hoses.
It's more likely your leak will be fixed by replacing the leaking hoses.