Is it a suspension squeak or a squeak you hear while driving, because I had an annoying squeak that ended up coming from where my C/V shaft goes into the wheel hub on my '99. I squirted a little oil in there and its all gone now. It may also be the bushings for the control arms themselves.

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198000 miles, driven almost 75 miles daily, tagged as a licensed ORV and used as one. Its been 2 feet in the air and had the head lights under water and it's still running strong! Built FORD Tough.