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Home >> Chevrolet >> 2014 >> Traverse LS, 4D Utility >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U0073 or U2100: Control Module Communication >> Circuit/System Verification
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Circuit/System Verification

  1. Refer to Data Link References  to determine which serial data system is used for a specific control module.
  2. If DTC U2100 is set along with DTCs C0710 and U2142, diagnose all those codes first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
  3. This DTC cannot be retrieved with a current status. Diagnosis is accomplished using the symptom Scan Tool Does Not Communicate with High Speed GMLAN Device  or Scan Tool Does Not Communicate with Low Speed GMLAN Device .
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