LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Driver Assistance Systems >> Diagnostic Information And Procedures >> DTC B356A: Vehicle Direction Warning Switch Circuit (GMC) >> Circuit/System Verification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Verification

  1. Ignition - On/Vehicle - In Service Mode
  2. Operate the component: Lane Departure Warning Switch - Cycle On and Off

    Verify the scan tool parameter: Lane Departure Warning Switch Status = Active/Inactive - The value should change when selecting the different switch positions.

    • If not the specified values 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified values 
  3. All OK.
scientia non olet · About LEMON Manuals