It will be best for you to buy a Haynes Manual at a parts house or bookstore. It will give you full details and pictures. They have them that are specific to your car so you are not buying information on something you do not need.
Just below the lower radiator hose.
take it to a mechanic
You do not, you have to replace it.
You need to be more specific as to front or rear.
location of ecm on 1998 Chevrolet Malibu
Dose 1998 Chevrolet Malibu 2.4 litter have a ECM fuse and where is it?"
the switch is located at the top back of brake pedal!!
It is much cheaper to replace the CV shaft. Purchase a Haynes manual that is specific to your car.
Build up in the radiator system or a plug can cause this. Do a radiator flush (or have a professional do it if you're not interested but it's fairly easy if you read an online HOWTO) to remove the grime and refill with fresh coolant. This solved the problem in my 2003. Check the low coolant level sensor and replace if defective. It is in the side of the radiator.
replace the starter on a 1998 Chevrolet cavalier
HOW TO REPLACE A STARTER ON A 1998 CHEVY MALIBU
in the Chevy Malibu forum