Squeak in front wheels

It's more than likely the ujoint in the front by the knuckle...You can jack your truck up and turn the wheel to the side it is squeaking the most. Turn the tire by hand and see what it feels like.If your u joint is bad it will bind when you spin your tire.

front wheel bearing is bad

could be wheel bearing ,could be cv joint could possably be bushings in suspenion.

It is probably your wheel bearings. Although, it is possible that your CV Axle could be damaged.

Usually a steering wheel shake is a bad tire. Any chance you have 2 bad tires on the car? Only a front tire will make the steering wheel shake.

Sounds like front wheel bearing or CV joint (constant velocity joint) - get it in before warranty runs out - they are not cheap!

Well a steering flush would not necessarily be related to squeaking.

So, you need to locate exactly where the sound is coming from...
It really sounds like steering wheel turning and resistance causes the noise, is this constant, or only while actually turning the wheel?

Likely it would be semi constant, so that would focus you on the assist portion... Be careful around all moving parts, but you need to locate the source.

Try taking a section of heater hose, and listen through one end and move carefully around with the other end and see what you find. Likely something under the hood, with your note about window open...

Now, if the squeaking stops when the steering wheel stops turning, now steering components are suspect.... So, again, louder with window down makes me think outside and in front...I would stand in front of the car, have your handy assistant actuate the steering wheel, and you decide which side, right or left.... Suspect items that squeak only during steering wheel input include, amongst other things, the entire strut, all ball joint, including joints in the steering linkage.... Be sure to keep clear of moving parts, your handy assistant would not know they they are crushing you, while truning the wheel......

Doc

Don't turn left

check your CV joint

Actually, there are not a places to lubricate, other than the Rzeppa joints (those at the big ball & socket looking things right behind the front wheels). That being said, here is what I would look for if it was in my shop:
Examine the front sway bar bushings. They may be bad or worn. Rocking side to side will move the swat bar. Look at the bar, there are 4 bushings; 2 at each end, and 2 under the center of the vehicle, held in by a "half-moon" looking clamp. Spray WD-40 or something like that on it real good & drive it.
Get back to me if this does not help.