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Discussion Starter · #1 ·
I just brought back my truck to the STOCK setting then I rechecked the load by plugging my CORTEX back in and verifying the settings. When I was in the middle of Tune vehicle, my foot snagged the programmer and it unplugged. The fan came on and which I though was odd but when I went to start the truck it just turns over, no starting. What happened? What can I do to fix this? I've plugged the CORTEX in a couple of times and when it asks to turn on the ignition (which I do) it wont advance past this. Help!
 

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Discussion Starter · #2 ·
I just brought back my truck to the STOCK setting then I rechecked the load by plugging my CORTEX back in and verifying the settings. When I was in the middle of Tune vehicle, my foot snagged the programmer and it unplugged. The fan came on and which I though was odd but when I went to start the truck it just turns over, no starting. What happened? What can I do to fix this? I've plugged the CORTEX in a couple of times and when it asks to turn on the ignition (which I do) it wont advance past this. Help!
Well, I seemed to have fixed it. I decided to see if I could reset the ECU by unplugging the battery. Once I did that, I got it started. Not sure what happened other than my fat foot getting in the way, but problem seems fixed....anyone have a technical answer to what happened?
 

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sounds like it was in programming mode when your foot pulled the plug so maybe the code wasnt fully loaded. Resetting the ECU made it fully reload everything
 

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you terminated the transfer of the programming by pulling the plug in the middle of the transfer. Its a quick and easy way to brick your truck if you keep at it. You were lucky this time, don't attempt it again.
 

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I worry when I read stories like these. I just got a Cortex today and was outside changing it over to the 87 Performance tune. I think I held my breath the whole time, it went through smoothly. Truck drives a lot better, can't wait to try out the 91 performance tune.
 

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Discussion Starter · #6 ·
I worry when I read stories like these. I just got a Cortex today and was outside changing it over to the 87 Performance tune. I think I held my breath the whole time, it went through smoothly. Truck drives a lot better, can't wait to try out the 91 performance tune.
I wouldnt get too worried, just be deliberate when tuning. I have had no issues up until this point and that was due to "fat foot" error. I corrected the problem by unplugging the battery which cleared the ECU memory. I called Superchips today just to confirm my erroneous actions and correction and they agreed.

After driving a year on the 91 Performance, I switched to the TOW yesterday just to play and I thought it performed better on the low end which is where I do most of my driving trafffic.
 
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