- The body control module BCM must be programmed with the proper
  RPO configurations. The BCM stores the information regarding the vehicle
 options and if the BCM is not properly configured with the correct RPO codes,
       the     BCM  will not control all of the features properly. Ensure
that      the  following   conditions     exist in order to prepare for BCM
programming:
 
| •  | The battery is fully charged. | 
 
| •  | The ignition switch is in the ON position. | 
 
| •  | The data link connector (DLC) is accessible. | 
 
| •  | All disconnected modules and devices are reconnected before programming. | 
 
- To setup a new BCM, access the SPECIAL FUNCTIONS menu on the scan
  tool to program the BCM. Select NEW BCM SETUP and follow the instructions
      on the scan tool.
 
- If the BCM fails to accept the program, perform the following
  steps:
 
| •  | Inspect all BCM connections. | 
 
| •  | Verify that the scan tool has the latest software version. | 
 
Passlock Learn Procedures
Important:  If any module or device listed is replaced, programming of the module
must be done prior   to performing the Passlock Learn procedure.
Perform the Learn Procedure if any of the following components have
  been replaced:
|     •  | The body control module, BCM | 
 
|     •  | The powertrain control module PCM | 
 
Important: After programming, perform the following to avoid future  misdiagnosis:
- Turn the ignition OFF for 10 seconds.
 
- Connect the scan tool to the data link connector.
 
- Turn the ignition ON with the engine OFF.
 
- Use the scan tool in order to retrieve history DTCs from all modules.
 
- Clear all history DTCs.