Re-learn procedure
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CF Beginner
Joined: Nov 2021
Posts: 8
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From: Texas
Re-learn procedure
I replaced the ECU in my 2003 Silverado 1500 5.3L . Truck will now crank but won't start. I performed the re-learn procedure that came with the ECU but obviously that didn't work. If I put the old ECU in the truck starts. I'm wondering if their re-learn instructions were not the right ones for my truck. Anyone know the procedure so I can get my truck running?
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