TORQUE CONVERTER/LUBE HYDRAULIC CIRCUITS CONSTRUCTION [5R55S]
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• In the 5R55S transmission, fluid for torque converter operation flows as follows during TCC release:
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― From the LINE circuit, through the converter clutch limit valve, through the converter control valve, to the torque converter
― From the torque converter, through the converter control valve, into the lube circuits
• The thermostat bypass valve allows fluid from the torque converter to bypass the fluid cooler and enter into the lube circuits when fluid temperature is cold.
• When TCC is applied, fluid for torque converter operation flows as follows:
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― From the LINE circuit, through the converter clutch limit valve, through the converter control valve, into the lube circuits
― From the LINE circuit, through the converter pressure modulator valve, through the converter control valve, to the torque converter
