Conditions for Running the DTC

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Engine running for greater than 5 seconds.
Output speed greater than 60 RPM.
Transmission fluid temperature between 20°C (68°F) and 130°C (266°F).
Shift is complete and range attained is not neutral.
DTCs P0721 and/or P0722 are not active.