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Home >> GMC >> 2013 >> Sierra 1500 XFE >> Repair and Diagnosis >> External Pages >> Different car >> Section 2558 (Data Communication System) >> Diagnostic Information and Procedures >> DTC U0073 or U2100: Control Module Communication Bus A/CAN Bus >> Circuit/System Verification

Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 GMC Sierra 3500 HD, 2015 GMC Sierra 2500 HD, 2015 GMC Sierra 1500, 2015 Chevrolet Silverado 3500 HD, and 2015 Chevrolet Silverado 2500 HD. 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 communication system is used for a specific device.
  2. This DTC may not be retrieved with a current status. Diagnosis is accomplished using the symptom. Refer to Symptoms - Data Communications .
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