Hybrid Direct, 2-3-4 Clutch Assembly
WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
HD 234 clutch fluid is directed to the hybrid direct, 2-3-4 clutch piston to apply the hybrid direct, 2-3-4 clutch plates.