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Mark, if you take a borrowed ECM to swap and do not enter the key that you're referring to will the problem still exist? I ask because I'm suffering the code 26 disease now and I did swap the ECM but I simply unplugged the two connectors on mine and then plugged them into the borrowed ECM. I went 235 miles on it on one ride with no light and the next morning it came on in 2 miles from morning startup.but even if you borrow one for testing, the borrowed unit should have a key that will make it run the engine
--Mark
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