Erase All Keys And Program Two Keys - Without Intelligent Access (IA)

NOTE: This procedure erases all programmed ignition keys from the vehicle memory. The vehicle cannot start until a minimum of 2 keys are programmed into the Body Control Module (BCM).

NOTE: Two Passive Anti-Theft System (PATS) keys with the correct mechanical cut must be available to carry out this procedure.

Turn the key from the OFF position to the ON position.
From the scan tool, enter TOOLBOX. Select Body>Security>PATS Functions and follow the Integrated Diagnostic System (IDS) on-screen instructions to enter PATS security access.
From the scan tool menu select "Ignition Key Code Erase" and follow the IDS on-screen instructions until the key erase procedure completes. The scan tool then instructs you to program 2 keys to complete the process.
Turn the key to the OFF position and disconnect the scan tool (the key does not need to be removed from the ignition at this time).

NOTE: The doors lock and then unlock to confirm that each Integrated Keyhead Transmitter (IKT) is programmed.

Turn the first PATS key to the RUN position for a minimum of 3 seconds.
Turn the first PATS key to the OFF position and remove the key from the ignition.
Insert the second PATS key into the ignition and turn the key to the RUN position for a minimum of 3 seconds.
The engine should now start with both PATS keys.
If it is desired to program additional key(s) (only a total of 8 keys can be programmed into the BCM), refer to Key Programming - Program a Key Using Two Programmed Keys in this service information for each additional key that needs to be programmed.