transmission problems

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transmission was shifting hard and jurking when taking off at 45 it would clunk and then drive smooth.chech engine light came on code was 742,tarque converter curtic stuck on.replaced curtic ,and transmission stop working,put in new tarque converter and pump shaft.transmission will not go in any gear.car will not move at all.2001 chevy impala3.8 l engine.car was drivable before repaires.