Key Programming - Unlimited Key Mode: Disable
- 1.
From the scan tool, enter TOOLBOX. Select Body>Security>PATS Functions and follow the IDS on-screen instructions to enter PATS security access.
- 2.
Select "unlimited key mode OFF" and follow the IDS on-screen instructions.
- 3.
Select "Ignition Key Code Erase" and follow the IDS on-screen instructions.
- 4.
Turn the key to OFF and disconnect the scan tool (the key does not need to be removed at this time).
- 5.
Turn the first PATS key to RUN for a minimum of 3 seconds.
- 6.
Turn the first PATS key to OFF and remove the key from the ignition key cylinder.
- 7.
Insert the second PATS key into the ignition key cylinder and turn the ignition key cylinder to RUN for a minimum of 3 seconds.
- 8.
The engine should now start with either PATS key.
- 9.
If it is desired to program additional key(s) (a total of 8 keys can be programmed into the BCM), REFER to Key Programming Using Two Programmed Keys .