Without Navigation Radio
WARNING: This page is about a different car, the 2016 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF and all vehicle systems OFF, disconnect the GPS and cellular coax cable connector at the K73 Telematics Communication Interface Control Module. It may take up to 2 min for all vehicle systems to power down.
- Using the EL-49903-3 kit (EL-49903-5 adapter and EL-49903-4 coax cable), connect the EL-49903 GM OnStar® antenna diagnostic tool kit to the K73 Telematics Communication Interface Control Module. Place the test antenna on the roof of the vehicle, ignition ON.
- Verify the DTC does not set while operating the vehicle within the conditions for running the DTC.
- If the DTC sets
Replace the K73 Telematics Communications Interface Control Module.
- If the DTC does not set
- If the DTC sets
- Ignition OFF.
- Disconnect the EL-49903 GM OnStar® antenna diagnostic tool kit from the K73 Telematics Communication Interface Control Module
- Test the coax cable. Refer to Component Testing .
- If the coax cable does not pass the test
Replace the coax cable.
- If the coax cable passes the test
- If the coax cable does not pass the test
- Test or replace the T4G Cellular Phone, Navigation and Digital Radio Antenna.