Buick Riviera P Codes (Powertrain) P1600 - P1699 P1640

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1995 Buick Riviera Code P1640

1995 BUICK RIVIERA
Check Engine Light Is On. Code Comes Up P1640 Which Gives Me 3 Possibilities. The Torque Converter Locks Up Ok, So That Eliminates One....
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Asked by JDMOD2

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