For 1990-2009 cars

### Circuit Description

This DTC is set as current in all vehicle communication interface module (VCIM) service parts and has been implemented as a reminder to contact the OnStar® Call Center to properly update the customer's account once the new module has been installed. This call is initiated automatically after the installation of the replacement VCIM, and the completion of the Setup New VCIM procedure on the scan tool. No external circuits are involved.

### DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B1001 Option Configuration Error

### Conditions for Running the DTC

The DTC is only run once per ignition cycle after a VCIM service part installation.

### Conditions for Setting the DTC

This DTC is set as current in every VCIM service part, until the Setup New VCIM procedure on the scan tool has been performed after a service replacement.

### Action Taken When the DTC Sets

• | The OnStar® status LED turns red.

• | The blue OnStar® Call Center button is disabled.

### Conditions for Clearing the DTC

A current DTC clears following the successful completion of the Setup New VCIM procedure via the scan tool.

Step | Action | Yes | No
--- | --- | --- | ---
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 |

1. Reconfigure the system using the Setup new vehicle communication interface module (VCIM) function on the scan tool. Refer to OnStar Reconfiguration .
2. Cycle the ignition.

Does the DTC reset?

Go to Step 3

Go to Step 4

3 | Replace the VCIM. Refer to Communication Interface Module Replacement . Did you complete the replacement? | Go to Step 4 | --
4 |

1. Use the scan tool in order to clear the DTCs.
2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

Go to Step 2

System OK