GM Service Manual Online
For 1990-2009 cars only

You must perform a Passlock™ Learn Procedure if any of the following components have been replaced:

    • Passlock™ sensor
    • Body control module
    • Vehicle control module

Both of the above modules except for the Passlock™ sensor must be programmed using their own vehicle configuration. See the individual module service manual section.

There are 2 types of Passlock learn procedures:

    • A 30 minute procedure which requires a scan tool used in order to clear codes. PASSLOCK Reprogramming Auto Learn
    • A 10 minute procedure which requires a Techline Terminal and a Tech 2 scan tool. This procedure is listed below:

10 Minute Procedure

  1. Ensure that the battery is fully charged.
  2. Follow the directions provided on the Techline Terminal and the Tech 2.