Torque Converter Clutch Released
WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
At this time, the torque converter clutch remains released and TCC signal (13) fluid remains available at the lock up control valve in preparation for a possible torque converter clutch apply. When conditions are appropriate, the TCM ramps up the duty cycle of the lock up pressure control solenoid valve (SLU) to initiate the TCC apply. Refer to Drive Range Fifth Gear - Torque Converter Clutch Applied .