New car key cut from master ... how do i make it work?

Question edited for clarity and make some sentences.
Question moved to model category.

You are going in a very wide 'around the house' route to fix something very simple and missing some important steps.

You only need another key made based on the VIN Number of the vehicle. They all have a code, and the locksmith if properly registered can cut you a key to fit based on the key code assigned to the VIN.

Then you have to have the anti-theft chip in the key linked to the ECM (engine control module) to allow you to start the vehicle. Get two keys made. You are supposed to have a key cut when you lost key number 2 and were only left with 1 key..

Adding Keys
Important:
• To initiate, this procedures requires that a learned master key be available.
• A total of 10 keys may be programmed to a single vehicle.
• This procedure adds keys only. The procedure does not erase previously learned keys.
• The keys to be learned must duplicate the mechanical cut of the current key.
• If more than one valet key is to be learned, immediately precede each valet key with a learned master key.
With a previously learned master key, turn ON the ignition, with the engine OFF.
Turn OFF the ignition and remove the key.
Within 10 seconds of turning OFF the ignition, insert the key to be learned and turn ON the ignition. The vehicle has now learned the new key.

1 First you will need to purchase a blank Toyota transponder key. You can do this from the dealership, a locksmith, or an online source such as eBay. Once you have the key, take the blank key and the master key to a locksmith that he or she can duplicate the key. This will be much cheaper than the dealership.

2 Now that you have the newly cut key and the master key, you can program the Toyota transponder key. Sit in the driver's side of the Toyota vehicle. Press and release the brake and gas pedal simultaneously.

3 Insert the master transponder key. Do not turn it. Push and release the gas pedal 5 times within at least 15 seconds of inserting the master key.

4 Press and release the brake pedal 6 times within 20 seconds of completing step 3, then remove the master transponder key.

5 Insert the newly cut transponder key into the ignition, but do not turn. Press the gas pedal once.

6 Wait up to 2 minutes or whenever the security light on the dashboard turns off. Once the light goes off, remove the new transponder key and press the brake pedal once. The new transponder key should now be programmed. Test the key by attempting to start the engine. If the engine does not start, repeat the steps above.

Ok on the key you can go to your dealer and they can cut a key for your vehicle but you will need proof of ownership and they can tell you if there is a chip in it on the remote you can program it your self if it has a security system. You need to make sure all the doors hood and trunk are shut turn the ignition to position 2 ( on 2 clicks without starting it ) and repeat this 5 times within 5 seconds and then press the lock button on the remote the security light should illuminate for about 2 seconds if program is a sucess. If this does not work you will need to take it to the dealer and there will be a charge for it most likely

You do not have another master ? If not you need a factory scan tool Dealer or mobile lock smith .
Connect a scan tool to the vehicle.
Turn ON the ignition, with the engine OFF.
Insure that all power consuming devices are turned OFF on the vehicle.
With a scan tool, select Request Info. under Service Programming System and follow the scan tool on-screen instructions.
Disconnect the scan tool from the vehicle and connect the scan tool to a Techline Terminal with the current Service Programming System (SPS) software.
On the Techline Terminal, select Service Programming System and follow the Techline Terminal on-screen instructions.
Disconnect the scan tool from the Techline Terminal and re-connect the scan tool to the vehicle.
With a master passkey III key, turn ON the ignition with the engine OFF.
With a scan tool, select Program ECU under Service Programming System.
At this point the scan tool must remain connected for the duration of the 10-minute relearn procedure.
Important: On some vehicles the SECURITY telltale maybe illuminated on steady for the duration of the 10-minute relearn procedure.
Observe the scan tool, after approximately 10 minutes the scan tool will display "Programming Successful, Turn OFF Ignition". The vehicle is now ready to relearn the key information and/or the passwords on the next ignition switch transition from OFF to ON.
Turn OFF the ignition and wait 5 seconds.
With a master Passkey III key, start the vehicle. The theft deterrent control module has now learned the key transponder information and the PCM has now learned the fuel continue password.
Important: Perform this step ONLY on vehicles with EXPORT and Canadian configured theft deterrent control modules.
Turn OFF the ignition and wait 15 seconds minimum.
Important: Perform this step ONLY on vehicles with EXPORT and Canadian configured theft deterrent control modules.
With a second master passkey III key, start the vehicle. The theft deterrent control module has now learned the second master Passkey III key transponder information
With a scan tool, clear any DTCs.

So good news and bad news. Bad news is the remote portion for a 1998 Cadillac Catera Key Fob requires profressional programming. We suggest using a locksmith, they should save you some money compared to the dealer.

The good news is if you need to program another transponder key, you can do that yourself. Get a spare key cut and simply follow the instructions below:

If you need to order a key or remote you can order them online and save even more money: https://www.keylessentryremotefob.com/Cadillac-Catera-Remotes-and-Keys-s/5113.htm


· Switch ignition ON with master key to be programmed
· System LED will illuminate
· After approximately 10 minutes system LED will switch OFF
· Switch ignition OFF
· Wait 5 seconds
· Switch ignition ON
· System LED will illuminate
· After approximately 10 minutes system LED will switch OFF
· Switch ignition OFF
· Wait 5 seconds
· Switch ignition ON
· System LED will illuminate
· After Approximately 10 minutes system LED will switch OFF
· Switch ignition OFF
· Wait 5 seconds
· Start engine
· New master key now programmed
· Erase stored trouble codes
· Replacement parts caan also be programmed using diagnostic equipment
· NOTE: The vehicle learns the key transponder information on the ignition switch transition from OFF to CRANK. Ignition must be turned OFF before attempting to start the vehicle
· Insert master key into ignition switch
· Switch ignition ON
· Switch ignition OFF
· Remove master key
· Within 10 seconds insert new key
· Switch ignition ON
· New key now programmed
· NOTE: A maximum of 10 keys can be programmed using the master key

Hello and welcome. this is how you learn a new key. please note this is for adding a new key. you must still have one working key for this to work.

Adding Keys Important: • To initiate, this procedures requires that a learned master key be available. • A total of 10 keys may be programmed to a single vehicle. • This procedure adds keys only. The procedure does not erase previously learned keys. • The keys to be learned must duplicate the mechanical cut of the current key. • If more than one valet key is to be learned, immediately precede each valet key with a learned master key.

1. With a previously learned master key, turn ON the ignition, with the engine OFF.
2. Turn OFF the ignition and remove the key.
3. Within 10 seconds of turning OFF the ignition, insert the key to be learned and turn ON the ignition. The vehicle has now learned the new key.

I found this on the internet try it it MAY work.

Start with the key out of the ignition. Open the driver door (all other doors are closed). Driver door is unlocked (other doors don’t matter).


Perform these steps within 5 seconds
Insert the key into the ignition (don’t turn it)
Insert the key into the ignition (don’t turn it)


Perform these steps within 40 seconds
Close, then open the drivers door.
Close, then open the drivers door.
Insert the key into the ignition (don’t turn it) and pull it out.


Perform these steps within 40 seconds
Close, then open the drivers door.
Close, then open the drivers door.
Insert the key into the ignition and leave in the ignition.
Close the drivers door
Turn the ignition to ON (as far as you can go without cranking the engine), then back to off .
Remove the key from the ignition.


Within 3 seconds, the power door locks should lock then unlock automatically indicating successful entry into programming mode. Return to step 1 if the locks do not cycle at this point.


Perform these steps within 40 seconds
Press the lock and unlock buttons on the transmitter simultaneously for 1.5 seconds
Immediately after letting go of the lock and unlock buttons, press the lock button by itself and hold for 2 seconds. Within 3 seconds, the door locks should lock then unlock once indicating successful programming. If the door locks cycle twice, repeat steps 6a and 6b as the remote was not accepted.


Open drivers door

if its a hydralic cluch it has a piece of metal that sticks out right after the bell houseing
and when you step on the clutch it should move if not you ether are low on fluid or master is gone

You must get a new key from the dealer. Bring in the registration, and photo I.D. Then they will cut you a key. After that, try this procedure....

1. With a master passkey III key (Black), turn ON the ignition, with the engine OFF.
2. Observe the Security telltale, after approximately 10 minutes the telltale will turn off.
3. Turn OFF the ignition, and wait 5 seconds.
4. Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes.
5. With a master passkey III key, start the vehicle. The vehicle has now learned the key transponder information and the PCM has now learned the fuel continue password.
6. If it does not work, you will need to get it to the dealer.

GM technicians on-line