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 vent hose (1) to the differential assembly.
Install the vent hose clamp (2) to the vent hose.
Secure the grommet on the vent hose to the vehicle underbody.