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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 866 (HVAC System - Automatic) >> Diagnostic Information and Procedures >> DTC P0646 or P0647 >> Conditions for Clearing the DTC

Conditions for Clearing the DTC

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0646 and DTC P0647 are Type C DTCs

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