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Po742 - 2000 Chevrolet Impala

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Trouble Code: P0742 This should be looked at by a trusted transmission shop in your area to address this problem. This sometimes does require the replacement of the torque converter itself.

Torque Converter Clutch Circuit Stuck On (4T65-E)
Possible Causes:



TCC PWM solenoid valve for the fluid exhaust is restricted TCC regulated apply valve is stuck in the TCC apply position TCC control valve is stuck in the TCC apply position TCC feed limit valve is stuck (i.e., the TCC feed limit pressure, and the TCC release pressure to be low or nonexistent) Pressure regulator valve is stuck TCC fluid circuits leaking or abnormally low/high line pressure TCC release switch circuit is shorted to ground TSB 00-07-30-007A contains a repair procedure for this code

Posted on May 21, 2011

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