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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Driver Assistance Systems) >> Diagnostic Information and Procedures >> Side Blind Zone Alert System Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition/Vehicle - Off
  2. Ignition - On / Vehicle - In Service Mode
  3. Verify the component turns On and Off:
    • Side Blind Zone Alert Indicator@A9A Outside Rearview Mirror - Driver
    • Side Blind Zone Alert Indicator@A9B Outside Rearview Mirror - Passenger
    • Go to next step: If the component turns On and Off 
  4. Verify that no DTCs are set.
    • Go to next step: If no DTC is set 
  5. Verify the following control modules contain the latest software:B218L Side Object Sensor Module - Left
    • If not the latest software is contained 

      Program the control module:B218L Side Object Sensor Module - Left

    • Go to next step: If the latest software is contained 
  6. All OK.
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