New ignition switch put into car. Turn ignition car won't start. Think it's the chip in key how do I bypass

Its just about impossible to bypass. You would need a key that matches the old key chip cut to the new tumblers. Each key has a chip in it that the computer looks for.

Two ways to bypass. One is permanent and your security light will stay on forever, one can be temporary, or permanent. your choice. The chip in the key is nothing but a resistor. There are two very small wires attached to the ignition tumbler inside the column. These wires are accessible if you remove the lower dash beneath the steering column. These two little tiny wires will have an orange sleeve protecting them. You will need a resistor with the same resistance as the chip that is in your key. If you have a spare ignition key. you can cut and strip the little white wires, attempt to hold them onto the small silver bar in the middle of the chip in the ignition key without touching the brass key, and start the car. Twist the two wires together and let the car run untill the security light come on. that permanently puts the security to sleep. The other way is what they do when they install remote starters in these cars. Go to a stereo shop with your key and see if they will sell you a resistor that matches your key, and put that between the two white wires. This can be permanent or if you decide to change your tumbler later, just remove it. One thing, you connect to the end of the wires that go to the juction block, not the end that goes up to the tumbler.

Yes there is a bypass. Costs about $200.00. You should be able to put the key close enough to the cylinder to get the security to go off. I don't know what you did to get the cylinder out. but there is a chip mounted to the steering column. once the key is close enough to it it will let the car start. If you broke the chip getting the cylinder out then you have some money to put out to get it running.

Does the starter turn over when you are trying to start before you remove the battery cables or do you have only dash lights and nothing else (not even a click). I don't believe you need a key with a chip for 2000 model, they have an ignition switch system that is basically synced to the lock cylinder and key. The ignition switch can go bad and you'll see the theft light flash on the dash. If you decide to install a new switch yourself, there is a 30minute process to reprogram the theft system to your key. It can be done by yourself, but you have to be there the whole time and need to have a battery charger hooked up while performing this operation.

what you have done is to change the ignition switch and not had it re-programmed ,if you still have the original key then take the chip out out of it and put it inside the new key then it will start if not for whatever reason then call breakdown truck and have it taken to a dealer

any locksmith can make a new key, yes its expensive.

well does the key go in does it turn to the start pos? if the dash dost power up its because the switch is bad if it will power up but not start it can be becuse of the resitor chip depends on what is going on if you cant get power its becuse of the switch

I've got an even cheaper and easier solution, instead of buying a new cylinder, find that plug and snip the orange wires going to the old cylinder.Then remove the resistor chip from the key and solder each of the the wires to each side. this will fool the car into thinking the correct resistor chip is in place, allowing you to use the original key or any copies with or without resistor chips. i just did this to my caddy and it roared to life! :)