I can't get my jvc ls-r530 out of demo mode. I just put it in my Pontiac sunfire 98 tonight and I tried to do what the book tells you to do but it just doesn't work, it never gives me the option to turn off . No matter how long I turn the control dail it never says off just stays on, on . Please help! Thanks!

SOURCE: 1997 pontiac sunfire key wont turn in ignition

You will have to have the ignition cylinder replaced in the car. The only thing that keeps that ignition from turning is a little tang on the sdie of it. The only way that tang moves is by the tumblers inside the cylinder moving it. They will have a hard time replacing it too as they can't remove the cylinder from the bore until it is in the "run" position. Obviously there are ways to get them out but it usually involves using half the tools of a good tech's toolbox. if it is towed the towtruck driver will have to use dolly wheels or remove the shifter cable at the transmission to get it to move as it will be stuck in park- unless is a standard shift.
I am sorry for the bad news. Get a second opinion from somebody that can put their hands on it , but it sounds like you have a tried all or most of the tricks.
Good luck...........Scott

SOURCE: 98 Pontiac Sunfire 2.2l Reading engine codes

you need a OBD-II code reader or take it to autozone they do it free

SOURCE: 98 buick regal ls - po442 obd code

Usually the source of the leak is the gas cap (either loose or defective) but if that doesn't apply to your issue then the canister is next to the gas tank.

SOURCE: adding transmission fluid to 98 pontiac sunfire

There is a plug located on top of the transmission under the brake master cylinder. It is held in place by a bolt on the side of the transmission near the firewall. Remove the bolt, then remove the plug. Fill it until the fluid comes out of the hole.

SOURCE: 98 pontiac sunfire starts then in a second shuts off

first of all lights on dashbord should come on no matter security or pass key deterant is in .better check "ignition switch".