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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1184 (Data Communication System) >> Diagnostic Information and Procedures >> DTC U0020 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Diagnosis of this DTC is accomplished via the symptom, Scan Tool Does Not Communicate with Low Speed GMLAN Device .

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