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Home >> GMC >> 2018 >> Acadia SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 331 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B1025-B1135: Audio Output Circuits (UQF) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, A11 Radio ON, mute OFF.
  2. Verify clear audio is heard from each speaker, adjusting fade and balance controls to test each speaker individually.
    • If audio is inoperative from one or more speakers but not all. 

      Refer to Circuit/System Testing One Speaker.

    • If audio is Inoperative from all speakers  .

      Refer to Circuit/System Testing All Speakers.

    • If clear audio is heard from all speakers. 
  3. All OK.