Linking the BCM to the PIM without Tech 2

Without the Tech 2, perform the following procedure:

1. Replace the key fob transmitter for each of the vehicle's keys.

   Program the key fob transmitter. Refer to Transmitter Programming Transmitter Programming in Keyless Entry.

2. Turn ignition ON with a valid key.
3. Leave the ignition in the ON position for 10 minutes. After 10 minutes the car horn will chirp once.
4. Turn the ignition OFF within 5 minutes after the horn chirp and ON again within 5 seconds. If the timing expires for this step, the sequence will be cancelled.
5. Leave the key in the ON position for 10 minutes. After 10 minutes the car horn will chirp twice.
6. Turn the ignition OFF within 5 minutes after the horn chirps and ON again within 5 seconds.
7. Leave the key in the ON position for 10 minutes, after 10 minutes the car horn will chirp three times. During the three horn chirps the BCM and PIM are being linked.
8. Turn the ignition OFF, and wait 5 seconds.
9. Turn the ignition ON and leave the ignition in the ON position for 10 minutes.
10. Turn the ignition OFF, and wait 5 seconds.
11. Turn the ignition ON and leave the ignition in the ON position for 10 minutes.
12. Turn the ignition OFF, and wait 5 seconds.
13. Turn the ignition ON and leave the ignition in the ON position for 10 minutes.
14. The ECM is now ready to relearn the password from the PIM on the next ignition switch transition from OFF to CRANK.
15. Turn the ignition ON. Linking is now completed.
16. Turn the ignition to crank and run engine at idle speed, to confirm the linking procedure has been successful.