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Home >> GMC >> 2021 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 35 (Cellular, Entertainment, And Navigation System) >> Diagnostic Information and Procedures >> DTC B127E >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2020 GMC Terrain and 2020 Chevrolet Equinox. 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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