Condition 1
WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
The TCM commands 3rd gear, and the gear ratio indicates 2nd gear, 1.44:1 to 1.52:1 for 2.25 seconds or greater.