P0756 - Condition 1
WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
The TCM commands 1st gear with the transmission OSS 200 RPM or more, the TCC slip speed is -20 RPM or more, and the gear ratio indicates 4th gear, 0.65:1 to 1.87:1, for 2 seconds.