My explorer is squeaking and creaking LOUD, just driving down the street. How do I fix this?

see if this link helps you..
Four Common Car Noises
or this one.
https://www.google.co.uk/webhp?sourceid=chrome-instant&rlz=1C1CHBD_en-GBGB719GB719&ion=1&espv=2&ie=UTF-8#q=real+loud+whining+sound+in+my+front+end+while+driving+down+the+street

U joint their part of the drive shaft assembly lets it move up and down when you go over a bump
Makes a scarry noise when they are bad but they are cheap 10 bucks a peice and as long as you don't drive it for ever it won't fail tomarrow but get if fixed soon .

check the strut or top strut bearing for failure
the creaking noise can be from the spring being wound up from turning as the bearing has seized
have it inspected by a specialist suspension shop

ball joints ,together with control arms

Most likely a belt problem or a worn out tensioner. You left off the year, make, model and engine so it's a guessing gamet. Read this post on how to track down the source of noise

http://ricksfreeautorepairadvice.com/diagnose-squeak-noise-creaks-and-squeals/
Diagnose squeaks creaks and squeals

sounds like worn out shocks or struts

My wife drives a 2003 GMC Envoy and has been complaining about this same creaking noise upon breaking or going over speed humps. I researched this topic on the internet high and low and tried everything I read to no avail. I was about to give up and then realized it could be the motor mounts since when you break or go over bumps the engine does have some movement. Sprayed the most interesting looking motor mounts I've ever seen with silicone spray and the noise was gone! My wife has been complaining for years about this noise and now looking back what a simple solution!. By the way my motor mounts where not worn out, the rubber portion of the mount just needed a little lube.

chances are that noise is the ball joints telling you they are dry and have no grease and they should be replaces fairly soon

Sounds like it is your CV axles.  Turn the wheel one direction, right or left, and check just behind the wheels to see if your CV boot is cracked or ripped (the boot is a black, rubber accordion looking thing).  If it is cracked or ripped, I would say that is definitely the problem.

you need to get grease into pittman arm there is no grease fitting so get a needle fitting for your grease gun and poke thru the rubber ive done twice on 97 f150s and fixed the problem