Disabling Unlimited Key Mode
- From the scan tool, enter TOOLBOX. Select Body>Security>PATS Functions and follow the IDS on-screen instructions to enter PATS security access.
- Select "unlimited key mode OFF" and follow the IDS on-screen instructions.
- Select "Ignition Key Code Erase" and follow the IDS on-screen instructions.
- 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).
- 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 .