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Home >> GMC >> 2008 >> Yukon Base, 4.8 C >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Hybrid Engine Control System) >> Diagnostic Information and Procedures >> DTC P06AF >> Circuit/System Description

Circuit/System Description

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This diagnostic applies to communication integrity conditions between the engine control module (ECM) and the hybrid powertrain control module (HPCM). The HPCM monitors a state of health message that the ECM transmits to verify the ECM is functioning properly.

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