2004 Chevrolet Epica LSFACTORY OEM SERVICE PROCEDURE

Transmitter Programming Procedure

  1. Connect the scan tool to the data link connector (DLC).
  2. Turn the scan tool ON.
  3. From the MAIN MENU screen, select DIAGNOSTICS.
  4. From the MODEL YEAR screen, select the appropriate model year of the specific vehicle.
  5. From the VEHICLE TYPE screen, select the specific vehicle model.
  6. From the SYSTEM SELECTION MENU screen, select BODY.
  7. From the BODY SELECTION MENU screen, select CODING.
  8. From the CODING SYSTEM screen, select CODING.
  9. From the SECRET NUMBER OF CODINGS screen, enter 4 zeros 0-0-0-0 in the 4 boxes labeled 1-2-3-4.
  10. From the CODING SYSTEM SELECT screen, select KEYLESS ENTRY.
    11. IMPORTANT: A slight delay may occur and PLEASE WAIT may be displayed before the next screen appears.
  11. From the ISU RKE CODING screen, select KEY CODING.
  12. When directed by the scan tool, press any button on the first transmitter to be programmed.
    13. IMPORTANT: Ensure that transmitters from other vehicles in the immediate area are not activated during this procedure.
  13. Continue programming transmitters when directed by the scan tool until all transmitters have been programmed.
    14. IMPORTANT: A maximum of 4 transmitters may be programmed to a vehicle.
  14. Once all transmitters have been programmed, press the ESC Button on the keypad. The display will confirm the number of transmitters programmed. If the number displayed does not match the number of transmitters programmed, repeat the procedure.
  15. Turn the scan tool OFF, and then disconnect it from the DLC.
  16. Wait approximately 10 seconds, and then test the operation of each programmed transmitter to ensure it operates properly. The ISU leaves the programming mode automatically and switches to the normal operating mode when either of the following conditions occurs:
    • The scan tool is disconnected from the DLC.
    • Four passwords are recorded in the ISU.
Chapter Navigation
Return to Chapter: Transmitter Programming (Scan 100)
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.