GM Service Manual Online
For 1990-2009 cars only

Important: Before you perform the PSD re-initialization, check for Diagnostic Trouble Codes (DTCs) by performing Diagnostic Mode 1.

Refer to Diagnostic Modes for the procedure.

Perform the following PSD re-initialization procedure when any of the following conditions occur:

    • The PSD is inoperative.
    • Reconnecting the vehicle battery after being disconnected.
    • After recharging the vehicle battery due to a low or discharged battery condition.
    • After reinstalling or replacing the radio fuse located in the underhood accessory wiring junction block.
    • Exiting any of the diagnostic modes.
        Refer to Diagnostic Information and Procedures.

Perform this procedure in order to re-initialize the PSD:

  1. Set the PSD on/off switch in the overhead console to the off position.
  2. Manually open the PSD completely.
  3. Manually close and latch the PSD.
  4. Remove the RADIO fuse for 30 seconds.
  5. Reinstall the RADIO fuse.
  6. Wait 10 seconds.
  7. Set the PSD on/off switch in the overhead console to the on position.
  8. Press, then release either PSD open/close switch in order to completely open the PSD..
  9. Wait 5 seconds.
  10. Press, then release either PSD open/close switch in order to allow the PSD to close completely.
  11. Wait 5 seconds.
  12. Repeat steps 7 through 10 and re-check for proper PSD operation.