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.
Remove the crankshaft rear oil seal.
Important:
Do not damage the crankshaft or seal bore.
Pry out the crankshaft rear oil seal out using a suitable tool.
Fig 1: Prying Out Crankshaft Rear Oil Seal Out Using Suitable Tool