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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 191 (Data Communication System - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC U0001: High Speed CAN Communication Bus Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

This DTC may not be retrieved with a current status. Diagnosis is accomplished via the symptom, Scan Tool Does Not Communicate with High Speed GMLAN Device. Refer to Scan Tool Does Not Communicate with High Speed GMLAN Device  in order to isolate an intermittent condition caused by a short on the GMLAN serial data circuits.

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