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4l80e

The biggest problem with the OBD-I system is that it really doesn't tell shit as to what is going on inside that 4L80E as far as pressures, slippage, shift commands, etc like newer OBD-II systems or today's CAN-BUS systems where you can map out shift points and shift duration to rpm input, torque and output and read it and alter it live. The ECM computer in a '94 is no smarter that my Casio Scientific graphing calculator I had back then in College, and possibly "dumber"!
 
I have owned my truck since 2000 and the best thing I ever done is going to the DB2 I looked up what was best year for 6.5 it said 93 had the most satisfied customers of any year and I know why it’s just better I have now put on 8000 miles and no problems with transmission I was told it would not work but I am not having any trouble
 
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