01 impala trans failsafe and no communication
I have a 01 Impala with a 3.4 4T65E in the shop and just rebuilt the transmission. It is shifting very hard and I have no communication to any of the modules. I have between 0-7 volts on pin 2 of the diagnostic connector as I should and the scanner powers up fine and works. its a older snap-on graphing brick. any thoughts? Thanks.
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