CUSTOMER CONCERN Cabin heater blows cold unless the gasoline engine is running. CAUSE The front electric auxiliary heater coolant pump would not operate when commanded. CORRECTION Remove and replace the auxiliary heater coolant pump and verify cabin heat in electric mode.

CUSTOMER CONCERN StabiliTrak warning is on with Electronic Brake Control Module DTC C0287. CAUSE Confirmed failed B119 multi-axis acceleration sensor after power, ground, and chassis expansion bus checks. CORRECTION Remove and replace the B119 multi-axis acceleration sensor, perform the vehicle yaw sensor learn, clear DTC C0287, and verify stability-control operation.

CUSTOMER CONCERN The Driver Information Center displays Service High Voltage Charging System, and DTCs P0AA6, P1F0E and P1FFF are stored. CAUSE The confirmed repair identified outdated hybrid-control-module calibration after the high-voltage isolation and coolant checks did not reveal a hardware fault. CORRECTION Program and configure the Hybrid Powertrain Control Module 2 and companion hybrid-control module with the updated calibration.