2000 Grand Prix won't start

[ray66]

I have a 2000 Grand Prix. Won't start, gauges jump randomly. Checked battery and connections. Any ideas?

[Mad Monkey]

Did you check your grounds? sounds like the problem.

[Iceman6669]

I think I already told him that in chat.....

[ray66]

Yes, checked it, it's tight. Strange thing, when I wiggle the ignition key on and off the dash lights get brighter then dimmer. With parking lights on it won't let key out of ignition, with parking lights off it will allow key to come out after about 30 seconds.

[Impala131]

If the gauges jump around, sure sounds like an electrical issue to me. Make sure your connections to the battery are clean and good, same with your grounds and alternator/fuse box connections. I once accidentally ran my battery too low and had issues not unlike those you are describing.

[Mad Monkey]

have you pulled the dash to see if you got a loose wire around the ignition???

[ray66]

This problem happened just after a very heavy rain. Not sure if that has anything to do with it.....And no I haven't pulled the dash out.

[BillBoost37]

This is either battery related, ground related or an ignition switch issue from the sound of it.

[Rico]

Have you recently added any aftermarket stuff like a head unit or speakers?