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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1079 (Cellular Communication System) >> Diagnostic Information and Procedures >> DTC U1500: Inter-Device Dedicated Bus Malfunction >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

This DTC indicates an internal fault and is set within the vehicle communication interface module (VCIM). No external circuits are involved.

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