How do you change versatrek fluid in a 2003 Buick rendezvous?

To change the Versatrak fluid in a 2003 Buick Rendezvous, start by lifting the vehicle and securing it on jack stands. Remove the drain plug from the Versatrak rear differential and allow the old fluid to fully drain out. Replace the drain plug, then fill the differential with the recommended Versatrak fluid through the fill plug until it reaches the appropriate level. Finally, replace the fill plug securely and lower the vehicle.