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.

Output speed is greater than 200 RPM.
Ignition voltage is between 9-18 V.
Shift to range is completed.
DTCs P0716, P0717, P0721, P0722, P0877, and P0878 are not active.