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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1363 (Hybrid Controls - DTC B008A To DTC P0AF7) >> DTC P0563 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Engine ON, the scan tool Control Module Voltage parameter should display less than 14.5 volts.
    • If the voltage is not less than the specified value, test the Ignition Voltage circuit for a short to a voltage source greater than the specified value.
    • If the voltage is within the specified range, replace the PIM.
  2. Inspect for an external condition that may have caused a high -12 V circuit condition such as a battery charger.
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