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Home >> Chevrolet >> 2021 >> Traverse L >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Cellular, Entertainment, And Navigation System >> Diagnostic Information and Procedures >> No Global Positioning System (GPS) Reception (without UE1/UI3) >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF/vehicle OFF, disconnect the navigation antenna coax cable connector at the A11 Radio. Connect the EL-49903  GM OnStar antenna diagnostic tool kit to the A11 Radio, place the test antenna on the roof of the vehicle.
  2. Ignition ON/vehicle in Service Mode, radio ON, navigation selected.
  3. Verify DTC B2462 is not set.
    • If DTC B2462 is set 

      Replace the A11 Radio.

    • Go to next step: If DTC B2462 is not set 
  4. Ignition OFF/vehicle OFF, disconnect the radio navigation coax cable at the T2RR Antenna - Roof Rear.
  5. Verify the radio navigation coax cable passes the coax cable component test. 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 
  6. Test or replace the T2RR Antenna - Roof Rear.
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