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Home >> Buick >> 2012 >> Enclave FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 399 (Data Communication System) >> Diagnostic Information and Procedures >> DTC U0073 or U2100: Control Module Communication Bus/Controller Area Network (CAN) Bus >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  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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