Just an update. Took my truck in today to get 60k service done....fuel filter, TB and MAF clean, tranny flush, etc. Even though I wasn't quite ready for the service, I took it in early to have the DTC code checked out....plus I had a screw in one of my tires.
Right before I walked in to drop off the key, I switched back to stock. When I did, it cleared the code....no more check engine light!!! Crazy. Good to go though.
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