GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 35628-A Vats/Pass Interrogator Tester

    Important: When servicing the PASS-Key® II system, obtain all the vehicle ignition keys. Verify the key code values with the J 35628-A .

  1. In order to copy a PASS-Key® II ignition key, determine the necessary key code or resistance value.
  2. Determine the master ignition key code using the J 35628-A as outlined in the following procedure:
  3.         Important: Disconnect the tool wiring connectors.

    2.1. Turn ON the J 35628-A .
    2.2. Insert the key into the tool lock cylinder.
    2.3. Note the measured key code of the master ignition key as displayed on the key code reader.
    2.4. Obtain a key blank matching the key code.
    2.5. Cut the key blank to match the original key.