Conditions for Running the DTC

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 engine speed is greater than 200 RPM.
The transmission output speed is greater than 60 RPM.
The transmission fluid temperature is between 20°C (68°F) and 130°C (266°F).
Shift is complete and range attained is not neutral.
DTC P0721, P0722, or P2771 is not set.