The spring is probably as you suspect from the mechanism under your seat that plays the role you desire to have back.
You may have to remove four bolts to remove your seat and replace your spring, upon examining the workings of this mechanism you should be able to replace the spring and get back into position after of course tightening the seat back down to recommended torque.

It should because the 2nd gen Saturn is from 1996–2001

Only one regulator as most of cars have per window.

It is possible, try to remove your bumper first and compare it to salvage one. The braket should be the same or you can't install it, otherwise braket customization should be made to make it fit to your vehicle.

go to advance auto parts they will be able to help you

Only 2 things come into my mind here...

Your multiple function switch is busted or has a loose connection with the wiper motor itself.

If the headlights are working in manual mode, then you have two main components to look at the DRL Relay and Resistor.

The DRL Resistor is at the Left-Front corner of the vehicle, behind the headlamp assembly, attached to the frame rail. The DRL Relay is in the Underhood Fuse Block, as shown below. I would test that the relay is working and that power is making it to the resistor and that the resistor is connected to a ground path.

It is possible that there's a short in your headlight circuit.

It should fit since yours is First Gen, 02-07, i dont know why the seller told you otherwise...im curious though, why didnt you ask the seller why it wont fit.

I asked several times, they fit but are not exact. The 2007 has chrome on the back, the 2006 and below is black plastic. Very few if anyone would ever notice the difference. I bought a 2002 from a junkyard and had it shipped to California, installed it myself and it fit perfect. No electric issues, not fit issues, the paint on my new one is better then the paint on my car slightly. Everything worked out good and I did not have to have it pained which is what I feared.

Try to use the Find a Shop feature od AutoMD to see a list of service shops near you with their address, telephone # and labor rate per hour. You can call a couple of them to compare prices.

Place the keys in the ignition, turn the keys to accessory mode (key-on/engine off), and make sure the wiper motor switch is in the off position. Turn the ignition switch to the off position and remove the keys. The wiper arms are now in their parked position, although may not be properly aligned.

Access the bottom of the compromised wiper blade arm. You may have to open the hood or remove the wiper arm cowling (refer to the owners manual for the removal of the cowling on your specific vehicle if required).

Locate the retaining nut at the bottom of the wiper arm assembly. Some models will have a protective plastic cap covering the nut. Other vehicles may have a hinged cover that is part of the wiper arm itself. Pry the cap off with a straight-edge screwdriver or unsnap the hinged cover by prying it up from the bottom of the wiper arm with the screwdriver to reveal the retaining nut.

Hold the wiper arm stable with one hand and remove the nut with the ratchet and a socket with the other.

Wiggle the wiper arm gently with one hand while gently prying the base of the arm off of the splined wiper arm stud. The stud has small splines that hold the wiper arm in the correct position unless otherwise compromised. The wiper arm will feel secured to the stud, but the combination of wiggling (gently) and prying with the screwdriver will work to remove the arm.

Place the wiper arm back onto the splined wiper arm stud by positioning it in the off position. Some vehicles may have a wiper arm stop that the arm rests against in the off position. If so, make sure the wiper arm is resting against the wiper arm stop when replacing it on the stud.

Replace the retaining nut and tighten with the ratchet and socket. Repeat this procedure for the other wiper arm if desired.

Use two sets of pliers to bend the wiper arm back into position if the wiper arm has been bent. Hold the wiper arm with one set of pliers to anchor it and use the other set to bend it so the wiper is perpendicular to the windshield. If the arm is bent too badly, replacing the wiper arm may be a more viable option.