WARNING: This page is about a different car, the 2004 Pontiac Sunfire, 2004 Chevrolet Classic, and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
The PCM will release the TCC before downshifting into Manual Second. The TCC will not reapply in Second gear under normal operating conditions.
Fig 1: Manual Range 2nd - With Electronic Range Select Mode