WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of Crankshaft Balancer
Courtesy of GENERAL MOTORS CORP.
Remove the balancer retaining bolt and washer.
Discard the bolt.
Remove the balancer using a universal removal tool.