Ecu flash

Vermilion96

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Does anyone have the file to a factory 1998 gt auto ecu tune? I’m Trying to flash my 96 ecu to a 98. Long story short I swapped a 98 4r70w and trans harness into my 96 and the car got a p0707 code “trans range sensor circuit a low” and was freaking out and is stuck in limp mode. Any advice or help would be appreciated on how I would go about doing this or if anyone has done the swap before.
 

lwarrior1016

Mr. Secondary Timing Chain
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I don’t think your problem is going to be in the calibration. There are wiring and possibly pin out differences between the 96 and 98. The first thing that come to mind is the fuel system, they are totally different.

All that being said, you swapped the transmission and the external transmission harness? What was the reason for swapping the harness?

If you have the stock 96 harness still, put it back in. Then drop the valve body out of the transmission and swap the 96 solenoids and internal harness in to the 98 transmission.
 
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