Hybrid Direct, 2-3-4 Clutch Releases: Notes
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.
If the transmission is operating in Second gear when an electrical malfunction occurs, the shift solenoid 1 defaults to its normally closed state (OFF) and the hybrid direct, 2-3-4 clutch is released.