Conditions for Setting the DTC: P0757
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.
SS2 is commanded OFF and PS2 remains ON for up to 15 seconds depending on transmission fluid temperature.