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Home >> GMC >> 2019 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 126 (Secondary And Configurable Customer Control System) >> Diagnostic Information And Procedures >> Drive Mode Switch Malfunction (GMC) >> Circuit/System Verification
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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. Ignition - On / Vehicle - In Service Mode
  2. Operate the component:S126 Drive Mode Select Switch - Rotate Left & Rotate Right

    Verify the following information is correctly displayed:Drive Mode @ A5 Driver Information Center

    • If the component does not work as specified 

      Refer to Circuit/System Testing - Test 1

    • Go to next step: If the component works as specified 
  3. Operate the component:S126 Drive Mode Select Switch - Rotate Left & Rotate Right

    Verify the following information is correctly displayed:Drive Mode - LED (Light Emitting Diode)@S126 Drive Mode Select Switch

    • If the component does not work as specified 

      Refer to Circuit/System Testing - Test 2

    • Go to next step: If the component works as specified 
  4. All OK.
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