GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Monte Carlo 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Body Control Module (BCM) Programming/RPO Configuration

Introduction

During body control module (BCM) related service, the procedures below are designated to set-up the BCM correctly. Before you start, read these procedures carefully and completely.

Setup New Body Control Module (BCM)

Important: 

   • The BCM will not function properly if the Setup New BCM procedure is not performed.
   • Make sure the battery is fully charged before performing the setup procedure.
   • Make sure all disconnected devices and connectors have been reconnected
   • Perform the Theft Deterrent Re-learn procedure after successfully finishing the Setup New BCM procedure. Refer to Programming Theft Deterrent System Components in Theft Deterrent. If the Theft Deterrent Re-learn procedure is not performed after a BCM replacement, the following conditions may occur:
      - The vehicle will not be protected against theft by the PASSLOCK system.
      - The engine will not crank nor start.

  1. Connect a Scan Tool (Tech 2) to the Data Link Connector (DLC).
  2. Turn the ignition switch on.
  3. Select Diagnostics and input all of the required data when prompted by the Scan Tool (Tech 2).
  4. Select BODY CONTROL MODULE.
  5. Select SPECIAL FUNCTIONS.
  6. Select Setup New BCM.
  7. Note, Input all of the required data when prompted by the scan tool.
  8. Select Setup SDM Part Number in BCM, and follow the onscreen directions.
  9. Select New VIN, and follow the onscreen directions.
  10. Select Option Configuration, and follow the onscreen directions. .
  11. Select Point of Sale, and follow the onscreen directions. .
  12. Exit back to the SPECIAL FUNCTIONS menu.
  13. When the BCM, VIN, Point of Sale and Option Configuration have been entered, proceed with the Theft Deterrent Re-learn procedure.
  14. If the scan tool displays UNABLE TO PROGRAM BCM. BCM IS SECURED, then the BCM must be replaced and this procedure must be repeated on a new BCM.

NOTE: After the above procedure has been completed, personalization of the BCM defaults to a default setting. Inform the customer that the personalization settings must be set again.

Important: After programming, perform the following to avoid future misdiagnosis:

  1. Turn the ignition OFF for 10 seconds.
  2. Connect the scan tool to the data link connector.
  3. Turn the ignition ON with the engine OFF.
  4. Use the scan tool in order to retrieve history DTCs from all modules.
  5. Clear all history DTCs.