I have several issues with my 2004 chevy malibu. My first one is when I turn my wheel no matter if its right or left its makes a loud squeaky sound and the last is that my driver seat leans on the right side and I was told that the entire rack needs to be replaced. Have yu heard anything about this or change yu help me with any of my issues?

When the steering is turned the power steering pump cuts in. Frequently this pump is driven by a fan belt and if it is loose it will squeal regardless of whether the car is moving or not.
That is easy to check as is the steering fluid level in the pump reservoir.
Next would be suspension mounting bushes and corresponding steering links. Harder to check and a hoist is recommended. Best left for a mechanic.
The seat sounds like the support frame has partially collapsed. That is all spot welded together and repairs are not really feasible
The Malibu LT is prone to the weld on rt front of driver seat breaking, causes seat to sag to right
. A second hand replacement may be a cheaper way to go. If there is a weight issue reinforcing may be advisable
See
http://www.automotiveforums.com/t919217-2004_chevy_malibu_maxx_broken_power_seat.html

If you have power seats the seat adjusters are made from aluminum and they do bend.They are non repairable
Check all bushings on the suspension for wear