What, exactly, is the problem?
check if your battery is low than usual ..might be alternator problem
I have the same problem with my 2004 Sunfire. Leave the ignition on for 10 minutes. Just let it sit for 10 minutes. No shorter than that time. And Should start.
parking pawl
i have a 2001 pontiac sunfire antitheft problem will not start anttheft light flashs on dash i can turn motor over buy jump starter but will not start
Have vehicle scanned to determine the problem
It is a common problem in most GM vehicles.
The radio on your 2000 Sunfire is probably reading "loc". If this is the problem, you need to go to a Pontiac dealer and pay them to unlock the radio. This is an anti theft device to insure your radio can not function if it is removed. The cost is from 10 to 20$
I had a similar problem in a Pontiac Sunfire. The guy at the dealership said it's a common problem with the switches they use for fan control in Chevy/Pontiac vehicles. It's about a $10 part.
Your alternator is not working.
I had this problem on my disco 1. Turned out to be the alternator, which was replaced and the problem was fixed.
A faulty ignition switch can certainly prevent an engine from starting. Before wasting any more money, take the vehicle to the dealer and see what they'll do about the switch.
Could be. But it might be an alternator problem instead of a batery problem. You need a good alternator to keep the bttery recharged. I wouldn't run out and buy a battery without getting the alternator checked.