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Thanks for the advice. I reached out to AEV during my lunch break and they stated the exact same thing. 1) Try to clear the DTC’s with the ProCal. 2) Drive the truck a few times and it should clear on it’s own. I’ll try it tonight.
So, I did mine today and got the same problem. All the error codes and no speed. Tried it again and when I saw the BRAKE light blink, I let off the brake and RES+ button. This time the horn beeped and most faults cleared and I got back the speedometer. Still have a check engine light and...