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Re: 4l60e trans problem
If you don't have 1st or 4th, the common factor is the 1-2 or A Shift Solenoid. Since that was replaced, have you looked at electrical connector at the tranny or the wires from the connector to the solenoid.
Did any of the tranny shops use a scan tool to troubleshoot the shifting into 1st or 4th?
//2000CAyukon
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