How do I Change my front wheelbearings

Jorge, you didn't give us much information about the year and submodel information for your Sonata, but hopefully the procedures should be the same; if not, you will have to navigate to the appropriate year and model that is specific to yours. Anyway, since you didn't say, I looked up a 2012 Sonata GLS with an automatic transmission.

On your car the front wheel bearings are pressed into the front hub, so you'll have to remove the hub and press it in and out with a hydraulic press. If you don't happen to have one (I don't myself), you can check and see if a friend does, or you can always take it to a machine shop where they can make short work of the job and hopefully not charge too much; it's easy if you have the right equipment, difficult if you don't.

Anyway, this guide will show you how to remove and replace the front hub and then the bearing.

Front Axle Assembly (Except HEV) — 2012 Hyundai Sonata GLS, Automatic Trans Service Manual ~ LEMON Manuals

Under the Repair Procedures section, the Replacement page will show you how to remove the hub, the Disassembly part shows how to remove the bearing, and of course the Reassembly tab gives instructions on installing a new bearing.

Hopefully that'll get you going. Let us know how it all turns out!