Reaction Planetary Gear Set
WARNING: This page is about a different car, the 2014 RAM 3500 HD and 2014 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
The reaction planetary carrier and reverse sun gear are a single component which is held by the 2C clutch when required. The sun gear is retained on the reaction carrier hub by a hidden snap ring and can not be removed. The reaction sun gear is a stand alone component that can be driven by the reverse clutch or held by the 4C clutch. The reaction annulus is welded to the reverse planetary carrier.