Conditions for Running the DTC: P1684

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

No DTCs P0711, P0712, P0713, P0716, P0717, P0722, P0723, or P1684.
DTC P1684 has not passed this key ON.
The TCM power up temperature is between -39 and +149°C (-38 and +300°F).