P0722 Condition 2
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The TCM detects an output speed below 61 RPM when the transmission is in 3rd, 4th, 5th, or 6th gear for 1 second, or the turbine speed is greater than 1500 RPM for 1 second.