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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Cellular, Entertainment, And Navigation System) >> Diagnostic Information and Procedures >> DTC B2455 (without UE1) >> 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.
NOTE:

It is necessary to have the vehicle in a quiet, open outside area where a cellular call can be successfully placed.

  1. Ignition ON.
  2. Verify that DTC B2455 is set.
    • If DTC B2455 is not set 

      All OK.

    • Go to next step: If DTC B2455 is set 
  3. Verify that your voice can be heard clearly after placing a cellular call.
    • If your voice can not be heard clearly 

      Refer to Circuit/System Testing.

    • Go to next step: If your voice can be heard clearly 
  4. All OK.
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