WARNING: This page is about a different car, the 2007 Isuzu i-370, 2007 GMC Canyon, and 2007 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of Crankshaft Rear Oil Seal Housing
Courtesy of GENERAL MOTORS CORP.
Remove the crankshaft rear oil seal housing and bolts.
Install 2 bolts (Jack Screws) into the threaded holes to break the seal of the housing.