P1684 - Fail Case 2

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Cadillac Escalade EXT. However, it is still accessible from the selected car via links, so may be relevant.

Vehicle speed is greater than 8 km/h (5 mph) for 300 seconds cumulative.
TCC slip speed is greater than 120 RPM for 300 seconds cumulative.
The TCM temperature sensor is between 120-150°C (248-302°F).
The TCM power up temperature has changed by less than 2°C (3.6°F) in 100 seconds.
The TFT is greater than 70°C (158°F).
The TFT has increased by 55°C (99°F) since startup.