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 TFT has not changed greater than 2°C (4°F), in greater than 80 seconds when the TFT at start-up is between -40°C (-40°F) and 20°C (68°F).