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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 100 (Parking Assistance Systems) >> Diagnostic Information and Procedures >> DTC B0958, B0959, B0960, or B0961 >> 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 ON.
  2. Verify DTC B1405 is not set.
    • Go to next step: If the DTC is not set 
  3. Verify that DTC B0958 01, B0959 01, B0960 01, B0961 01, B0958 21, B0959 21, B0960 21 or B0961 21 is not set.
    • If any of the DTCs are set 
    1. Verify none of the B306 Parking Assist Sensors are contaminated with snow, mud, dirt, slush, or ice.
      • If contaminated, clean the B306 Parking Assist Sensors.
      • Go to next step: If there is no contamination.
    2. Refer to Circuit/System Testing.
    • Go to next step: If none of the DTCs are set 
  4. Verify that DTC B0958 3A, B0959 3A, B0960 3A or B0961 3A is not set.
    • If any of the DTCs are set 

      Replace the appropriate B306 Parking Assist Sensor with the correct sensor type.

    • Go to next step: If none of the DTCs are set 
  5. Ignition ON, transmission in R.
  6. Verify the scan tool Parking Assist System Status parameter is Enabled.
    • If the Parking Assist System Status parameter is Disabled 

      Refer to Circuit/System Testing.

    • Go to next step: If the Parking Assist System Status parameter is Enabled 
  7. All OK.
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