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Home >> GMC >> 2021 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 94 (Driver Assistance Systems) >> Diagnostic Information And Procedures >> DTC B0987 (GMC) >> 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. Ignition ON.
  2. Verify DTC B356A is not set.
    • Go to next step: If the DTC is not set 
  3. Verify the lane keep assist indicator turns ON and OFF while pressing and releasing the lane keep assist switch.
    • If the indicator does not turn ON and OFF 

      Refer to Circuit/System Testing.

    • Go to next step: If the indictor turns ON and OFF 
  4. All OK.
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