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Home >> Chevrolet >> 2012 >> Traverse LS, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Cellular Systems, Entertainment Systems & Navigation Systems) >> Diagnostic Information and Procedures >> Digital Radio Poor or No Reception >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the digital radio antenna coax from the radio. Connect the EL-48028  to the radio and place on the roof of the vehicle. See Special Tools . Move the vehicle outside in an area with an unobstructed view of the southern sky.
  2. Ignition ON, radio tuned to XM channel 1, verify XM reception is clear and uninterrupted.
    • If reception is not clear, replace the radio.
  3. Ignition OFF, reconnect the antenna coax cable at the radio. Disconnect the antenna coax cable from the digital radio antenna.
  4. Ignition ON, radio ON, test for 4.5-5.5 V between the antenna coax cable center terminal and outer shield.
    • If less than the specified range, test the antenna coax cable for an open/high resistance.
    • If greater than the specified range, test the antenna coax cable for a short to voltage.
  5. If all circuits test normal, replace the digital radio antenna.
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