06 grand prix want start the dic. Says starting disabled due to theft system .so bought a new key and cylinder nothing's change I tried the resetting but nothing help with

Your best bet take it to the dealer or someother qualified repair shop. Nothing you can do . Or have a mobile lock smith come an program a new key

Relearn for what ? Anti theft system PK3 ? The relearn procedure is three 10 min. procedures for a total of 30 min.
30-Minute Relearn Procedure
Use this procedure after replacing the following components:
?€¢
The passkey III (PK3) keys

?€¢
The BCM

?€¢
The PCM, see important above

Important: This procedure is not available on vehicles equipped with option code (Z49).
If replacing a BCM with an GM SPO Replacement Part, perform the procedure to setup a new BCM prior to the 30-minute relearn procedure.

1. With a master passkey III key, turn ON the ignition, with the engine OFF.
2. Observe the STARTING DISABLED DUE TO THEFT message on the drivers information center (DIC), after approximately 10 minutes the STARTING DISABLED DUE TO THEFT message on the DIC 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.
Important: The vehicle learns the key transponder information and/or passwords on the ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

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. With a scan tool, clear any DTCs.

Your doing it wrong !
30-Minute Relearn Procedure
Use this procedure after replacing the following components:
?€¢
The passkey III (PK3) keys

?€¢
The BCM

?€¢
The PCM, see important above

Important: This procedure is not available on vehicles equipped with option code (Z49).
If replacing a BCM with an GM SPO Replacement Part, perform the procedure to setup a new BCM prior to the 30-minute relearn procedure.

1. With a master passkey III key, turn ON the ignition, with the engine OFF.
2. Observe the STARTING DISABLED DUE TO THEFT message on the drivers information center (DIC), after approximately 10 minutes the STARTING DISABLED DUE TO THEFT message on the DIC 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.
Important: The vehicle learns the key transponder information and/or passwords on the ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

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. With a scan tool, clear any DTCs.

Easiest thing to do is go to dealer with vin number and proof of ownership and get just a new key for the ignition. And if something has to be reset, ask them about it.

take the new key and the car to a dealer service centre and have it programmed to the CPU

It is quite the prosses to dissarm the security system.I have tried before to no avail.I sugest you replace the lock cylender and have the dealer reprogram for the new key.This is your best bet to getting your car back.

Yes take it to the dealet ship and they will fix it and you dont have to try to figure it out. Is a program that they have to reset. You need theit computer.

needs a resister in the key? could be body control mondule but......GM and their keys with a resister that goes bad.....gonna have to go to a reputable repair shop..

2005 grand prix battery went dead then the car would not start
received message starting disabled due to theft system
How can I reset myself

but what orange wire their plenty