It's a 1998 GT. When I try and start the car all I get is one loud click from the starter. Got the battery checked to make sure it was still good and it has 672 out of 690 CCA. Next step was bang on the starter to see if it would do the trick with no luck. Took the starter off to have tested and it was very weak and was making a terrible grinding noise during disengaging. Bought a new starter and put it in the car and still just getting one loud click when I try to turn the car over. Thought I had got a bad starter so I took it back to the parts store and got a second one and still get the same click. Nick (Blueguy) suggested maybe it was the ICM so swapped one in with no change in my problem. Someone help me before I give up and pay a shop to figure out that it's something small and simple. Thanks in advance.