GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 35628-A PASS/VATS Interrogator

  1. Use one of the following methods to determine the code if the ignition key is lost and there is no spare:
  2. • Determine the mechanical code from the code on the ignition key lock cylinder or recode the cylinder.
    • Determine the code from the dealer invoice for the vehicle or from the Divisional Roadside Assistance.
  3. Retrieve a blank personal automotive security system key (PASS-Key®) (a test key that has no resistance pellet).
  4. Cut the blank PASS-Key® to the correct mechanical cut. Use this new key to operate the ignition switch for the remaining steps.
  5. Remove the driver side knee bolster. Refer to Driver Knee Bolster Replacement in Instrument Panel, Gauges and Console.
  6. Important: Ensure to differentiate between the PASS-Key® connector and the supplemental inflatable restraint (SIR) connector. The PASS-Key® connector has PPL/WHT and WHT/BLK wires.

  7. Disconnect the key resistor sensing connector (the two-way connector leading into the steering column).
  8. Connect the connector end on the vehicle harness to the connector on the J 35628-A .
  9. Set the key code selector on the J 35628-A to number 1.
  10. Important: Do not connect to the steering column wiring.

  11. Use the key made in step 3 to attempt to start the vehicle. Perform the appropriate step:
  12. • The key code selector is set to the correct electrical code if the vehicle STARTS. Cut a new key having this electrical code. The new key is now the customers replacement key.
    • Go to step 10 if the vehicle does NOT START.
  13. Turn the ignition switch to the OFF position.
  14. Turn the key code selector to the next higher position.
  15. Press START rocker switch on the 4 minute timer on the J 35628-A to initiate a 4 minute time period.
  16. The red indicator turns off at the end of the 4 minute time interval.
  17. Attempt to start the vehicle.
  18. Repeat step 10 through step 14 until the vehicle starts.
  19. Cut a new key having the electrical code which allowed the vehicle to start.