Front Axle Shaft Constant Velocity Joint
WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
The front axle shaft constant velocity joint is of the Rzeppa joint design. The shaft end, which mates with the knuckle/hub, has a helical spline. The helical spline ensures a tight, press-type fit. This design prevents end play between the hub bearing and front axle shaft.