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Just had this problem. I removed the IGN E fuse to take the fuse tap off of it. Apparently that left the socket too loose.

A minute with a pick and it's fine.
 

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Discussion Starter #24
This is the thread I messaged you about.
It ended up being one of the ecm fuses under the hood wasn’t making good contact. You could wiggle it and the codes would go away. Squeezed the contacts back together and never had the problem again.
 
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