About GM Differential
In your GM car, the differential is designed to realize three functions: to aim the engine power at the wheels; to behave as the final gear reduction in the car, decreasing the rotational speed of the transmission one final time before it hits the wheels; to transfer the power to the wheels while allowing them to rotate at different speeds, and that's why this part is called differential. Specifically, the differential splits the engine torque into two ways, allowing each output to spin at a different speed. However, the differential can be worn on day owing to long time usage. You are supposed to check it every time when you GM car do the regular maintenance. Don't take the risk of driving your car with a failing differential. Once you decide to change it, we are glad to offer you all GM genuine OEM differential with a discounted price.