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Home >> GMC >> 2019 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 137 (Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC B125A: Antenna Signal Circuit >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2018 GMC Terrain and 2018 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect the antenna for proper mounting or physical damage.
    • If damage is found 

      Repair or replace as necessary

    • Go to next step: If no damage is found 
  2. Ignition ON/Vehicle in Service Mode, A11 Radio ON.
  3. Verify station reception is normal when tuned to several known good AM and FM stations.
    • If AM or FM reception is poor. 

      Refer to Circuit/System Testing

    • Go to next step: If reception is normal 
  4. All OK.
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