Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System - Manual >> Diagnostic Information and Procedures >> DTC P0645, P0646 or P0647: Air Conditioning (A/C) Compressor Clutch Relay Control Circuit >> Diagnostic Fault Information