The radio of my Pontiac sunfire 2000 is lock and i dont know how can i solve the problem a little red light is open and write thef lock

The problem is in the ignition cylinder lock.
The body control module (BCM) is what controls the theft deterrent system on the 2000 Pontiac Sunfire.
It can be reprogrammed, but is complex to do.

Here are some pictures for you.
http://www.autofuseboxdiagram.com/4232-2000-pontiac-sunfire-2-2-fuse-box-diagram/

http://www.automotix.net/usedautoparts/2000-pontiac-sunfire-chassis_computer-inventory.html?fit_notes=e1360a49a192739e006f059ad1d62904&seq_num=8

The most likely answer is that your vehicle's door pin switches aren't working. When you open the driver's door, does your dome light turn on? Your radio works with the vehicle's data bus to stay on until the door is opened; if the system can't tell that the door has been opened, then it won't turn off. The door pin switch should be mounted at the front of the door opening.

Low coolant warning lamp.

under your battery tray, you will see a big red knob, remove the knob using a funnel add tranny fluid until you can physically see it in the tranny
check with engine running!!!!

dealer has codes radio "loc"is part of security system call first they can also advise how to retrieve the radio id code which is needed or if u have manual in it explains how to retrieve the radio id code

It is a dealership you bought it from. Deffiniatly look up lemon laws for your state! They are alot harder on dealerships then private citizens.

for now squirt some WD40 into the lock and work the key in and out untill it opens. then clean the lock with carb cleaner. let dry then find a dry grafite lube and apply while working the key in the lock

Hi,
There is two black plastic clips need to be replace on the seat
on the little rod and then push strait

That is a warning light that comes on when you get low on antifreeze. You will see your reservior on the left where you add coolant. You can just buy some 50/50 mix from the store, and add it. You may want to do some investigation to see where you may have lost some coolant. Make sure you add some though. Hope that helps.

I had the same problem the day after having my drivers side window motor replaced. The brain surgen who replaced the motor didn't notice the door lock/unlock switch didn't work when he put the door back togeather. Bypassing it until they got another switch the next day solved the problem