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 Front Oil Seal
Courtesy of GENERAL MOTORS CORP.
IMPORTANT:
Do not damage the engine front cover or the crankshaft.
Pry out and discard the crankshaft front oil seal using a suitable tool.