WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Removing Case Bushing
Courtesy of GENERAL MOTORS CORP.
Remove the case bushing (7) using J 8092:
driver handle (1) and J 34196-10 (2) which is part of kit J 34196-B:
bushing service set.