B2484

DTC B2483 or B2484

Circuit Description

The navigation antenna is connected to the vehicle communication interface module (VCIM) with an RG-174 coax cable. The VCIM polls the data from the navigation antenna once every second.

DTC Descriptor

This diagnostic procedure supports the following DTCs:

* DTC B2483 GPS Sensor Circuit
* DTC B2484 GPS Sensor Circuit Open

Conditions for Running the DTC

* The ignition must be in the RUN or ACC position.
* The system voltage is at least 9.5 volts and no more than 15.5 volts.
* All the above conditions are present for greater than one second.

Conditions for Setting the DTC

* The VCIM does not detect a navigation signal.
* All the above conditions are present for greater than one second.

Action Taken When the DTC Sets

* The OnStar(R) status LED turns RED.
* The OnStar(R) Call Center cannot locate the vehicle.

Conditions for Clearing the DTC

* The VCIM detects the presence of a navigation antenna.
* A history DTC clears after 50 malfunction-free ignition cycles.
* The VCIM receives the clear DTC command from the scan tool.