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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 490 (Hybrid/EV Control System) >> Diagnostic Information and Procedures >> DTC P0563 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

The hybrid powertrain control module continuously monitors the system voltage on the Ignition voltage circuits. The hybrid powertrain control module is located within the drive motor generator power inverter module and is not serviced separately. A higher than normal voltage may cause the control module or sensors to operate improperly.

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