I lost my keys to a 97 Bonneville i need to know how to remove the old one and replace it with the new myself. Keith

My info shows you have passlock security system. The key is just a mechanical key, the key doesn't have a pellet or transponder. A locksmith should have been able to make you a new key and it should have worked fine. It's the tumbler that communicates with passlock, not the key.
Since you busted it, I doubt I can help. You need a new lock cylinder, probably a new passlock sensor, then you need to program it.

It's worth the 350. There are a lot of electrical connections that have to be removed, vacuum lines removed, fuel lines removed. Then you need to remove all the bolts that hold it on the engine. That requires that the rocker covers have to come off. Then you clean the old gasket material from the engine block, replace the gaskets and then torque the bolts with a torque wrench. Reconnecting all the wire harness connectors and vacuum lines and fuel lines and then trying to figure why it won't start. Sure you're up to the challenge?

sounds like a loose ground wire...# 10 on the diagram located under the kick panel on the left side of brake pedal . rug needs to be lifted to see panel hanging on side like an old phone.. unscrew ground wire, clean with wire brush, spray with lubricant and put it back/

Sounds like you need a new ign. switch. You can do this yourself.

Remove the old one and simply insert the new one. Its that easy

remove the steering wheel and turn signal switch and you will see a torx or allen head screw where the switch is located remove it and wsitch comes out!! if ya lost the key go to a lock smith and he should be able to cut a key from your vin dealer can usually do this also that is if ya lost ur key

Go to the dealer with the VIN and they can cut a new key to fit the original cylinder.

you have to have the old key to do it put key in turn on remove wheel ther is a set screw toremove lock cylnder

If you just need an ignition key, take your title and ID to a Chevy dealer. They may be able to provide you with new keys.

I just recently had to do this myself, and thankfully its not too difficult. for ease of access start by removing the plastic cover that protects the fuses and relays in the engine compartment. next, using a 1/2" socket or wrench remove the two nuts that secure what seems to be a lift brace on the back of the engine.

with those two items out of the way diconnect the power from the blower motor. use a 9/32" wrench or socket to remove the 5 or 6 bolts that secure the motor to the firewall. with the bolts removed you may need to gently pry the rubber seal off of the firewall in order to remove the motor.

with the motor loose you should be able to spin and jimmy it around the tube that the tranmission dip stick resides in and remove it from the car. remove the rubber seal (and blower blades if necessary) from the old motor then follow the directions in reverse to install the new one.