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Home >> GMC >> 2021 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 156 (Cellular, Entertainment, And Navigation System) >> Diagnostic Information and Procedures >> DTC B127E >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2021 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify no other DTCs are present.
    • Go to next step: If no other DTCs are present 
  2. Ignition ON, infotainment system ON.
  3. Using a scan tool, under control functions select Info Display Test.
    • If the Info Display can not display the test image. 

      Refer to Circuit/System Testing.

    • Go to next step: If the Info Display can display the test image. 
  4. All OK
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