Quote Originally Posted by bigjul View Post
check/clean all the connections to battery. I did notice a cable that was not connected to anything. It's definitely a positive connector. Just to confirm the wires to the starter are the single purple(8mm) & (2)the double black/single red(13mm), assuming that is correct this positive cable doesn't belong to the starter. Here are the pics one standing over engine and one from drivers side.
1998 Grand Prix GTP 1.jpg
Positive cable especially that big fat cable goes to the starter . If you look at your starter it should be big fat positive to starter + my car is then followed by 2 other positive cables attached to the starter and black negative from ground in block to starter - .