Hybrid Direct, 2-3-4 Clutch Releases: Notes
WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. 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.