Front Wheel Drive Shaft Constant Velocity Joint (Outer Joint)
WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
The front wheel drive shaft constant velocity joint is made with 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 the front wheel drive axle.