Squeak when making sharp turns

Henry, first need to determine if it's the actual engine that is knocking. Other accessories (water pump, steering pump, etc) could cause a knock. If the ECM knock sensor picks up a knock, regardless of where it originated from, will start to make timing and fuel adjustments which may cause it to hesitate or "sputter". You can take off the drive belt and start the engine. This will be the tale. If you hear the knocking, it's obviously in the engine and could be as bad as crank bearings or even the torque converter. Have you had any work done recently? If there is no knocking when the engine is running without the serpentine belt, you should now be able to narrow down the bad component by rotating each drive pulley until you find the damage..

Remove the belt and turn the water pump, A/C clutch and power steering by hand in the direction they normally rotate. You may be able to feel a bad bearing. Does the sound change when you turn on the A/C or Defrost? That would point to the A/C clutch.

I assume you have already tried a new belt, and have cleaned all the pulleys to make sure there isn't something on them causing the belt to slip (then squeak when it catches again).

Belt is loose and stretch a little caused squeal, need readjust to tighten it up.

It should squeak either way. It is still connected to a pulley and belt. If the condenser is bad it is more of a whirling sound not a squeak. i hope this helps

yes they do, but the anti sway bar bushings are the more comon source of noise

There is a TSB for your complaint from Saturn: Here's the jist of it.

Condition: Some customers may comment on a squeak or squeal noise coming from the base of the steering column while turning vehicle.
Cause: The squeak or squeal noise may be caused by insufficient lubrication of the intermediate steering shaft-to rubberboot- contact area.
you may be able to get it warrantied through saturn. this is the TSB #
#03-02-34-002

If WD-40 got on belt, and squeak went away for a while, it may just need a new belt. The humming noise sounds like a worn wheel bearing that should be checked and replaced if needed. If squeak goes away when you push slightly on brake pedal, it may be rotor on same side as wheel bearing making the noise due to slight shifting of rotor because of worn bearing.You can try swapping tires on front from one side to other to confirm it isn't tire problem as well. If noise shifts to other side, then it's a tire.

worn pulley on the crankshaft will cause belt to squeak.pulley has worn to a point where it become to smooth belt cant grip it while turning so it start slipping making squeaking sound.

Power steering Belt or pump pulley. Could be that turning left puts more stress on your system then turning right and that's why you only hear it while turning left.

2 things can make a belt squeak.either they need to be tightend or you have something that one of the belts run that isnt turning freely and causeing the to squeak,Let me know if this helps.