WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
Install the recliner handle on the recliner shaft.
Push the recliner handle firmly onto the recliner shaft until fully seated.
Install the plastic center cap into the center of the recliner handle.