Yes, the 21570R14 tire will fit the wheel - as temporary measure. Keep in mind there may be some adverse (changes) to the braking and steering response with tires of different size mixed on the same axle. To minimize this effect - place the odd-sized tires on the non-drive axle (in this case on the rear tire positions) on your vehicle - which is front-wheel drive.

No they will not fit.

Check water pump.

If i'm not mistaking the symptoms I would say the power steering needs bleeding.I get that with my Dodge Ram too and it comes and goes.When you make sharp turns and the steering hits the stops it also causes it.If bleeding it don't stop it altogether you have to avoid hitting the stops although it may seem impossible.On the Dodge bleeding instructions it says to bleed the system by turning the steering side to side without hitting the stops. Haynes repair manual for your model might help.They are available at auto stores.

First question - have the struts and shocks ever been replaced previously? If not, then worn out struts and shocks would be the problem. Do the current set of struts and shocks have more than 60k miles?

Check the many on-line auto parts sources, such as; www.autopartswarehouse or www.rockauto.com for the replacement parts. For example, they (RockAuto) list the front struts from around $50.00 each, and the rear struts from around $18.00 each for your vehicle.

Several possibilities; faulty / worn strut mount (upper or lower), faulty / worn suspension bushing, faulty wheel / hub bearing, faulty / worn sway bar bushing or end link. First step - raise the front end (support with jack stands) and then inspect the strut mount and front suspension / control arm bushings.

Try the 'How-To-Guides' feature on the AutoMD website for the specific steps and details to inspect the front suspension and struts / shocks for wear.

Check the many on-line auto parts sources, such as; www.autopartswarehouse, or www.rockauto.com for the replacement parts.

Typically, replacing the ignition switch / lock cylinder - which will come with a new key - will resolve this problem.
Check with the many on-line auto parts sources, such as; www.autopartswarehouse.com or www.rockauto.com for the replacement parts. For example, they (RockAuto) list the ignition lock cylinder from around $9.00 for your vehicle.

See this repair guide for GM Celebrity/Century/Ciera/6000 1982-1996 Repair Guide
REMOVAL & INSTALLATION
Ignition Lock Cylinder

CAUTION
If the car is equipped with an air bag, do not service the steering column or dashboard components. Extreme danger of air bag deployment exists even with the battery removed! Serious injury could occur.

See this http://www.autozone.com/.../...rGuideContent.jsp

There are no auto parts sold directly from the AutoMD website. You may try the many on-line auto parts sources, such as; www.autopartswarehouse.com, www.rockauto.com, or www'partsgeek.com - to list only a few possibilities.

A strut spring ( coil ) compressor is required. Local auto parts stores have a free loan tool program.

CAUTION
The coil springs are under a considerable amount of tension. Be very careful when removing or installing them; they can exert enough force to cause very serious injury.
For more information, see this http://www.autozone.com/.../...rGuideContent.jsp

As CVO says spring tool is essential UNLESS you buy the complete strut (spring strut and top plate as a unit). That's what I did about 3 months ago Bought Munroe struts on sale at buy one get one free. Replaced all 4 (rears are strut and top plate only spring is seperate) Total cost was just over $300 Cdn tax included. Had trouble with a few of the lower bolts, had to heat with a torch and use an impact gun to get them out. Otherwise a relatively easy job. Requires an alignment when done. No adjustments needed to springs ready to install out of the box. I drive a 1999 Buick lesabre Custom 3.8L eng. Just turned 471000 Kilometers. (That's 292665.832 miles)

Dup.
A strut spring ( coil ) compressor is required. Local auto parts stores have a free loan tool program.

CAUTION
The coil springs are under a considerable amount of tension. Be very careful when removing or installing them; they can exert enough force to cause very serious injury.
For more information, see this http://www.autozone.com/.../...rGuideContent.jsp