WARNING: This page is about a different car, the 2008 Isuzu Ascender, 2008 GMC Envoy, and 2008 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of Input Sun Gear Front Bushing & Special Tools
Courtesy of GENERAL MOTORS CORP.
Using J 34196-5 which is part of kit J 34196-B
with J 8092
, remove the input sun gear front bushing (657) and rear bushing (659).