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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1580 (Antilock Brake System - Hybrid (Hp2) With Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C012D, C120A, C128A, C128D, C12BC, C12BD, or C12BE >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that no other DTCs are set.
  2. Using a scan tool, perform the EBCM, module setup, and EBCM Relearn.
  3. Verify that DTC C012D, C120A, C128A, C128D, C12BC, C12BD, or C12BE is not set.
    • If DTC is set replace brake pressure modulator valve (BPMV) assembly. If the DTC resets, replace the EBCM.
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