Chevrolet Impala LT Impala 2014 gearbox - 4 cylinder, the torque converter is sound, the problem is with the solenoid pack, and the oil is in used condition. Black but not burnt, no metal shavings. The gearbox was previously overhauled due to the torque converter and gears, and now due to the solenoid pack, and I'm not 100% sure about the rest. Open to offers.