The product is a Chassis ECM Temperature Center Dash specifically designed for a 2011 Chevrolet Volt with a genuine OEM designation. It comes with a part number of 591 and an interchange part number of 591-02772. The ECM has a mileage of 126,000 and is a used item with part conditions and options of 12/10, 1.4L, AOD, and 22759343. This ECM is a crucial component for maintaining the performance and electrical systems of the Chevrolet Volt.