Circuit/System Testing

2018 Chevrolet Traverse LS, 4WDSECTION Circuit/System Testing
  1. Ignition OFF/vehicle OFF, disconnect the GPS coax cable connector at the K73 Telematics Communication Interface Control Module.
  2. Connect the EL-49903-1  OnStar Test Antenna, Navn-Cell Comn to the K73 Telematics Communication Interface Control Module. Place the test antenna on the roof of the vehicle, ignition ON/vehicle in Service Mode.
  3. Verify DTC B2462 is not set or that the OnStar advisor can locate the vehicle.
    • If DTC B2462 is set or the advisor can not locate the vehicle 

      Replace the K73 Telematics Communication Interface Control Module.

    • Go to next step: If DTC B2462 is not set or that the OnStar advisor can locate the vehicle. 
  4. Ignition OFF/vehicle OFF, disconnect the EL-49903-1  OnStar Test Antenna, Navn-Cell Comn from the K73 Telematics Communication Interface Control Module
  5. Disconnect the GPS coax cable at the T2RR Antenna - Roof Rear.
  6. Test the coax cable between the K73 Telematics Communication Interface Control Module and the T2RR Antenna - Roof Rear. Refer to component testing.
    • If the coax cable does not pass the test 

      Replace the coax cable.

    • Go to next step: If the coax cable passes the test 
  7. Test or replace the T2RR Antenna - Roof Rear.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.