Will this fit over my existing bumper or does the old one come off?

This is a replacement cover — your factory bumper assembly stays in place. The cover bolts directly to existing mounting points where the original cover attached.

Can I paint this myself or does it need professional prep?

It comes primed and ready for paint. Sand lightly with 400-grit or finer before applying your color coat. If you're keeping it primed, wipe it down with a tack cloth before install.

Does this affect trailer hitch clearance?

This cover mounts at factory points — it won't interfere with hitch access or obstruct wiring. Test-fit before final fastening to confirm clearance with your specific hitch setup.