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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Automatic Transaxle - 4T80-E - Introduction (2 Of 2)) >> Description and Operation >> Automatic Transmission Hydraulic Diagrams >> Overdrive Range, Fourth Gear - Torque Converter Clutch Applied >> Notes

Overdrive Range, Fourth Gear - Torque Converter Clutch Applied: Notes

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The torque converter clutch applies during fourth gear operation after the Transmission Control Module (TCM) receives the appropriate input signals to energize the torque converter clutch (TCC) solenoid. To apply the torque converter clutch, the following changes take place in the electrical and hydraulic systems:

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